[{"data":1,"prerenderedAt":2365},["ShallowReactive",2],{"navigation":3,"\u002Fch08\u002Fdefault_argument":909,"\u002Fch08\u002Fdefault_argument-surround":2361},[4,36,56,96,230,270,414,457,508,583,649,685,767,864,900,904],{"title":5,"icon":6,"path":7,"stem":8,"children":9},"附录","i-lucide-bookmark","\u002Fappendix","appendix",[10,12,16,20,24,28,32],{"title":5,"path":7,"stem":11,"icon":6},"appendix\u002Findex",{"title":13,"path":14,"stem":15,"icon":6},"命令行界面","\u002Fappendix\u002Fcli","appendix\u002Fcli",{"title":17,"path":18,"stem":19,"icon":6},"代码风格","\u002Fappendix\u002Fcoding_style","appendix\u002Fcoding_style",{"title":21,"path":22,"stem":23,"icon":6},"关键字列表","\u002Fappendix\u002Fkeyword","appendix\u002Fkeyword",{"title":25,"path":26,"stem":27,"icon":6},"运算符优先级和结合方向","\u002Fappendix\u002Foperator","appendix\u002Foperator",{"title":29,"path":30,"stem":31,"icon":6},"预处理指令","\u002Fappendix\u002Fpreprocessor","appendix\u002Fpreprocessor",{"title":33,"path":34,"stem":35,"icon":6},"值类别","\u002Fappendix\u002Fvalue_category","appendix\u002Fvalue_category",{"title":37,"icon":38,"path":39,"stem":40,"children":41},"第〇章 基本概念","i-lucide-monitor","\u002Fch00","ch00",[42,44,48,52],{"title":37,"path":39,"stem":43,"icon":38},"ch00\u002Findex",{"title":45,"path":46,"stem":47,"icon":38},"计算机","\u002Fch00\u002Fcomputer","ch00\u002Fcomputer",{"title":49,"path":50,"stem":51,"icon":38},"编程","\u002Fch00\u002Fprogramming","ch00\u002Fprogramming",{"title":53,"path":54,"stem":55,"icon":38},"编程语言","\u002Fch00\u002Fprogramming_language","ch00\u002Fprogramming_language",{"title":57,"icon":58,"path":59,"stem":60,"children":61},"第一章 感性认识 C++ 程序","i-lucide-book-open","\u002Fch01","ch01",[62,64,68,72,76,80,84,88,92],{"title":57,"path":59,"stem":63,"icon":58},"ch01\u002Findex",{"title":65,"path":66,"stem":67,"icon":58},"赋值和分支","\u002Fch01\u002Fassignment_and_if","ch01\u002Fassignment_and_if",{"title":69,"path":70,"stem":71,"icon":58},"最麻烦的门槛","\u002Fch01\u002Fenvironment","ch01\u002Fenvironment",{"title":73,"path":74,"stem":75,"icon":58},"第一个 C++ 程序","\u002Fch01\u002Ffirst_program","ch01\u002Ffirst_program",{"title":77,"path":78,"stem":79,"icon":58},"输入","\u002Fch01\u002Finput","ch01\u002Finput",{"title":81,"path":82,"stem":83,"icon":58},"综合运用","\u002Fch01\u002Fintegrated_use","ch01\u002Fintegrated_use",{"title":85,"path":86,"stem":87,"icon":58},"循环","\u002Fch01\u002Floop","ch01\u002Floop",{"title":89,"path":90,"stem":91,"icon":58},"更多的输出","\u002Fch01\u002Fmore_output","ch01\u002Fmore_output",{"title":93,"path":94,"stem":95,"icon":58},"总结","\u002Fch01\u002Fsummary","ch01\u002Fsummary",{"title":97,"path":98,"stem":99,"children":100,"icon":102},"第二章 理性认识 C++ 程序","\u002Fch02","ch02\u002Findex",[101,103,149,188,227],{"title":97,"path":98,"stem":99,"icon":102},"i-lucide-code",{"title":104,"icon":105,"path":106,"stem":107,"children":108},"第 1 部分 数据成分","i-lucide-database","\u002Fch02\u002Fpart1","ch02\u002Fpart1\u002Findex",[109,110,114,118,122,126],{"title":104,"path":106,"stem":107,"icon":105},{"title":111,"path":112,"stem":113,"icon":105},"初识数组","\u002Fch02\u002Fpart1\u002Farray_glance","ch02\u002Fpart1\u002Farray_glance",{"title":115,"path":116,"stem":117,"icon":105},"常量","\u002Fch02\u002Fpart1\u002Fconstant","ch02\u002Fpart1\u002Fconstant",{"title":119,"path":120,"stem":121,"icon":105},"声明语句","\u002Fch02\u002Fpart1\u002Fdeclaration_statement","ch02\u002Fpart1\u002Fdeclaration_statement",{"title":123,"path":124,"stem":125,"icon":105},"只读变量","\u002Fch02\u002Fpart1\u002Freadonly_variable","ch02\u002Fpart1\u002Freadonly_variable",{"title":127,"icon":128,"path":129,"stem":130,"children":131},"类型系统","i-lucide-dna","\u002Fch02\u002Fpart1\u002Ftype_system","ch02\u002Fpart1\u002Ftype_system\u002Findex",[132,133,137,141,145],{"title":127,"path":129,"stem":130,"icon":128},{"title":134,"path":135,"stem":136,"icon":128},"布尔类型","\u002Fch02\u002Fpart1\u002Ftype_system\u002Fboolean_type","ch02\u002Fpart1\u002Ftype_system\u002Fboolean_type",{"title":138,"path":139,"stem":140,"icon":128},"字符类型","\u002Fch02\u002Fpart1\u002Ftype_system\u002Fcharacter_type","ch02\u002Fpart1\u002Ftype_system\u002Fcharacter_type",{"title":142,"path":143,"stem":144,"icon":128},"浮点类型","\u002Fch02\u002Fpart1\u002Ftype_system\u002Ffloat_type","ch02\u002Fpart1\u002Ftype_system\u002Ffloat_type",{"title":146,"path":147,"stem":148,"icon":128},"整型","\u002Fch02\u002Fpart1\u002Ftype_system\u002Finteger_type","ch02\u002Fpart1\u002Ftype_system\u002Finteger_type",{"title":150,"icon":151,"path":152,"stem":153,"children":154},"第 2 部分 运算成分","i-lucide-calculator","\u002Fch02\u002Fpart2","ch02\u002Fpart2\u002Findex",[155,156,160,164,168,172,176,180,184],{"title":150,"path":152,"stem":153,"icon":151},{"title":157,"path":158,"stem":159,"icon":151},"算术运算符","\u002Fch02\u002Fpart2\u002Farithmetic_operator","ch02\u002Fpart2\u002Farithmetic_operator",{"title":161,"path":162,"stem":163,"icon":151},"赋值运算符","\u002Fch02\u002Fpart2\u002Fassignment_operator","ch02\u002Fpart2\u002Fassignment_operator",{"title":165,"path":166,"stem":167,"icon":151},"位运算符（选读）","\u002Fch02\u002Fpart2\u002Fbit_operator","ch02\u002Fpart2\u002Fbit_operator",{"title":169,"path":170,"stem":171,"icon":151},"关系运算符","\u002Fch02\u002Fpart2\u002Fcomparison_operator","ch02\u002Fpart2\u002Fcomparison_operator",{"title":173,"path":174,"stem":175,"icon":151},"算术类型隐式转换","\u002Fch02\u002Fpart2\u002Fimplicit_conversion","ch02\u002Fpart2\u002Fimplicit_conversion",{"title":177,"path":178,"stem":179,"icon":151},"自增减运算符","\u002Fch02\u002Fpart2\u002Fincdec_operator","ch02\u002Fpart2\u002Fincdec_operator",{"title":181,"path":182,"stem":183,"icon":151},"逻辑运算符","\u002Fch02\u002Fpart2\u002Flogical_operator","ch02\u002Fpart2\u002Flogical_operator",{"title":185,"path":186,"stem":187,"icon":151},"其它常用运算符","\u002Fch02\u002Fpart2\u002Fother_operator","ch02\u002Fpart2\u002Fother_operator",{"title":189,"icon":190,"path":191,"stem":192,"children":193},"第 3 部分 控制成分","i-lucide-git-branch","\u002Fch02\u002Fpart3","ch02\u002Fpart3\u002Findex",[194,195,199,203,207,211,215,219,223],{"title":189,"path":191,"stem":192,"icon":190},{"title":196,"path":197,"stem":198,"icon":190},"复合语句","\u002Fch02\u002Fpart3\u002Fcompound_statement","ch02\u002Fpart3\u002Fcompound_statement",{"title":200,"path":201,"stem":202,"icon":190},"for 语句","\u002Fch02\u002Fpart3\u002Ffor_statement","ch02\u002Fpart3\u002Ffor_statement",{"title":204,"path":205,"stem":206,"icon":190},"if 语句","\u002Fch02\u002Fpart3\u002Fif_statement","ch02\u002Fpart3\u002Fif_statement",{"title":208,"path":209,"stem":210,"icon":190},"跳转语句","\u002Fch02\u002Fpart3\u002Fjump_statement","ch02\u002Fpart3\u002Fjump_statement",{"title":212,"path":213,"stem":214,"icon":190},"空语句","\u002Fch02\u002Fpart3\u002Fnull_statement","ch02\u002Fpart3\u002Fnull_statement",{"title":216,"path":217,"stem":218,"icon":190},"作用域","\u002Fch02\u002Fpart3\u002Fscope","ch02\u002Fpart3\u002Fscope",{"title":220,"path":221,"stem":222,"icon":190},"switch 语句","\u002Fch02\u002Fpart3\u002Fswitch_statement","ch02\u002Fpart3\u002Fswitch_statement",{"title":224,"path":225,"stem":226,"icon":190},"while 语句","\u002Fch02\u002Fpart3\u002Fwhile_statement","ch02\u002Fpart3\u002Fwhile_statement",{"title":93,"path":228,"stem":229,"icon":102},"\u002Fch02\u002Fsummary","ch02\u002Fsummary",{"title":231,"icon":232,"path":233,"stem":234,"children":235},"第三章 过程式编程","i-lucide-function-square","\u002Fch03","ch03",[236,239,243,247,251,255,259,263,267],{"title":231,"path":233,"stem":237,"icon":238},"ch03\u002Findex","i-lucide-square-function",{"title":240,"path":241,"stem":242,"icon":232},"函数","\u002Fch03\u002Ffunction","ch03\u002Ffunction",{"title":244,"path":245,"stem":246,"icon":232},"函数的定义、声明和调用","\u002Fch03\u002Ffunction_definition","ch03\u002Ffunction_definition",{"title":248,"path":249,"stem":250,"icon":232},"函数的执行","\u002Fch03\u002Ffunction_execution","ch03\u002Ffunction_execution",{"title":252,"path":253,"stem":254,"icon":232},"初识函数","\u002Fch03\u002Ffunction_glance","ch03\u002Ffunction_glance",{"title":256,"path":257,"stem":258,"icon":232},"递归","\u002Fch03\u002Frecursion","ch03\u002Frecursion",{"title":260,"path":261,"stem":262,"icon":232},"重新认识 C++ 程序","\u002Fch03\u002Freview_cpp","ch03\u002Freview_cpp",{"title":264,"path":265,"stem":266,"icon":232},"再谈作用域","\u002Fch03\u002Fscope_again","ch03\u002Fscope_again",{"title":93,"path":268,"stem":269,"icon":232},"\u002Fch03\u002Fsummary","ch03\u002Fsummary",{"title":271,"icon":272,"path":273,"stem":274,"children":275},"第四章 POD 类型与结构","i-lucide-layers","\u002Fch04","ch04",[276,278,301,316,320,338,365,392,407,410],{"title":271,"path":273,"stem":277,"icon":272},"ch04\u002Findex",{"title":279,"icon":280,"path":281,"stem":282,"children":283},"数组","i-lucide-grid","\u002Fch04\u002Farray","ch04\u002Farray\u002Findex",[284,285,289,293,297],{"title":279,"path":281,"stem":282,"icon":280},{"title":286,"path":287,"stem":288,"icon":280},"二维数组","\u002Fch04\u002Farray\u002F2d_array","ch04\u002Farray\u002F2d_array",{"title":290,"path":291,"stem":292,"icon":280},"数组的定义和初始化","\u002Fch04\u002Farray\u002Farray_init","ch04\u002Farray\u002Farray_init",{"title":294,"path":295,"stem":296,"icon":280},"数组的用途","\u002Fch04\u002Farray\u002Farray_usage","ch04\u002Farray\u002Farray_usage",{"title":298,"path":299,"stem":300,"icon":280},"C 风格字符串","\u002Fch04\u002Farray\u002Fc_string","ch04\u002Farray\u002Fc_string",{"title":302,"icon":303,"path":304,"stem":305,"children":306},"迁移到 C 语言","i-lucide-arrow-right-left","\u002Fch04\u002Fcompare_with_c","ch04\u002Fcompare_with_c\u002Findex",[307,308,312],{"title":302,"path":304,"stem":305,"icon":303},{"title":309,"path":310,"stem":311,"icon":303},"需要注意的 C 特性","\u002Fch04\u002Fcompare_with_c\u002Fc_feature","ch04\u002Fcompare_with_c\u002Fc_feature",{"title":313,"path":314,"stem":315,"icon":303},"C 输入输出","\u002Fch04\u002Fcompare_with_c\u002Fc_io","ch04\u002Fcompare_with_c\u002Fc_io",{"title":317,"path":318,"stem":319,"icon":272},"枚举","\u002Fch04\u002Fenum","ch04\u002Fenum",{"title":321,"path":322,"stem":323,"children":324,"icon":326},"输入输出成分","\u002Fch04\u002Fio","ch04\u002Fio\u002Findex",[325,327,330,334],{"title":321,"path":322,"stem":323,"icon":326},"i-lucide-terminal",{"title":77,"path":328,"stem":329,"icon":326},"\u002Fch04\u002Fio\u002Finput","ch04\u002Fio\u002Finput",{"title":331,"path":332,"stem":333,"icon":326},"输入失败状态","\u002Fch04\u002Fio\u002Finput_fail","ch04\u002Fio\u002Finput_fail",{"title":335,"path":336,"stem":337,"icon":326},"输出","\u002Fch04\u002Fio\u002Foutput","ch04\u002Fio\u002Foutput",{"title":339,"icon":340,"path":341,"stem":342,"children":343},"链表","i-lucide-list","\u002Fch04\u002Flist","ch04\u002Flist\u002Findex",[344,345,349,353,357,361],{"title":339,"path":341,"stem":342,"icon":340},{"title":346,"path":347,"stem":348,"icon":340},"new[] 和 delete[]","\u002Fch04\u002Flist\u002Farr_new_del","ch04\u002Flist\u002Farr_new_del",{"title":350,"path":351,"stem":352,"icon":340},"链表的增删","\u002Fch04\u002Flist\u002Flist_add_del","ch04\u002Flist\u002Flist_add_del",{"title":354,"path":355,"stem":356,"icon":340},"链表的构建","\u002Fch04\u002Flist\u002Flist_construct","ch04\u002Flist\u002Flist_construct",{"title":358,"path":359,"stem":360,"icon":340},"安全性","\u002Fch04\u002Flist\u002Fsafety","ch04\u002Flist\u002Fsafety",{"title":362,"path":363,"stem":364,"icon":340},"存储期","\u002Fch04\u002Flist\u002Fstorage_duration","ch04\u002Flist\u002Fstorage_duration",{"title":366,"path":367,"stem":368,"children":369,"icon":371},"指针","\u002Fch04\u002Fpointer","ch04\u002Fpointer\u002Findex",[370,372,376,380,384,388],{"title":366,"path":367,"stem":368,"icon":371},"i-lucide-dot",{"title":373,"path":374,"stem":375,"icon":371},"何为指针","\u002Fch04\u002Fpointer\u002Fpointer","ch04\u002Fpointer\u002Fpointer",{"title":377,"path":378,"stem":379,"icon":371},"指针和数组","\u002Fch04\u002Fpointer\u002Fpointer_and_array","ch04\u002Fpointer\u002Fpointer_and_array",{"title":381,"path":382,"stem":383,"icon":371},"指针的定义 Ⅰ","\u002Fch04\u002Fpointer\u002Fpointer_def","ch04\u002Fpointer\u002Fpointer_def",{"title":385,"path":386,"stem":387,"icon":371},"指针的定义 Ⅱ","\u002Fch04\u002Fpointer\u002Fpointer_def_2","ch04\u002Fpointer\u002Fpointer_def_2",{"title":389,"path":390,"stem":391,"icon":371},"指针的简单使用","\u002Fch04\u002Fpointer\u002Fpointer_usage","ch04\u002Fpointer\u002Fpointer_usage",{"title":393,"path":394,"stem":395,"children":396,"icon":398},"结构体","\u002Fch04\u002Fstruct","ch04\u002Fstruct\u002Findex",[397,399,403],{"title":393,"path":394,"stem":395,"icon":398},"i-lucide-box",{"title":400,"path":401,"stem":402,"icon":398},"结构体的定义","\u002Fch04\u002Fstruct\u002Fstruct_def","ch04\u002Fstruct\u002Fstruct_def",{"title":404,"path":405,"stem":406,"icon":398},"结构体的使用","\u002Fch04\u002Fstruct\u002Fstruct_usage","ch04\u002Fstruct\u002Fstruct_usage",{"title":93,"path":408,"stem":409,"icon":272},"\u002Fch04\u002Fsummary","ch04\u002Fsummary",{"title":411,"path":412,"stem":413,"icon":272},"联合体","\u002Fch04\u002Funion","ch04\u002Funion",{"title":415,"icon":416,"path":417,"stem":418,"children":419},"第五章 初探面向对象","i-lucide-copy","\u002Fch05","ch05",[420,422,426,430,434,438,442,446,450,454],{"title":415,"path":417,"stem":421,"icon":416},"ch05\u002Findex",{"title":423,"path":424,"stem":425,"icon":416},"构造函数","\u002Fch05\u002Fconstructor","ch05\u002Fconstructor",{"title":427,"path":428,"stem":429,"icon":416},"复制构造函数","\u002Fch05\u002Fcopy_constructor","ch05\u002Fcopy_constructor",{"title":431,"path":432,"stem":433,"icon":416},"预置构造函数","\u002Fch05\u002Fdefaulted_constructor","ch05\u002Fdefaulted_constructor",{"title":435,"path":436,"stem":437,"icon":416},"例子：简单的字符串","\u002Fch05\u002Feasy_string","ch05\u002Feasy_string",{"title":439,"path":440,"stem":441,"icon":416},"收尾工作","\u002Fch05\u002Fmisc","ch05\u002Fmisc",{"title":443,"path":444,"stem":445,"icon":416},"重载","\u002Fch05\u002Foverload","ch05\u002Foverload",{"title":447,"path":448,"stem":449,"icon":416},"引用","\u002Fch05\u002Freference","ch05\u002Freference",{"title":451,"path":452,"stem":453,"icon":416},"浅复制与深复制","\u002Fch05\u002Fshallow_deep_copy","ch05\u002Fshallow_deep_copy",{"title":93,"path":455,"stem":456,"icon":416},"\u002Fch05\u002Fsummary","ch05\u002Fsummary",{"title":458,"icon":459,"path":460,"stem":461,"children":462},"第六章 运算符重载","i-lucide-component","\u002Fch06","ch06",[463,465,469,473,477,481,485,489,493,497,501,504],{"title":458,"path":460,"stem":464,"icon":459},"ch06\u002Findex",{"title":466,"path":467,"stem":468,"icon":459},"赋值运算符重载","\u002Fch06\u002Fassignment_overload","ch06\u002Fassignment_overload",{"title":470,"path":471,"stem":472,"icon":459},"赋值与初始化","\u002Fch06\u002Fassignment_vs_construct","ch06\u002Fassignment_vs_construct",{"title":474,"path":475,"stem":476,"icon":459},"类型转换重载","\u002Fch06\u002Fcast_overload","ch06\u002Fcast_overload",{"title":478,"path":479,"stem":480,"icon":459},"只读成员函数","\u002Fch06\u002Fconst_member_function","ch06\u002Fconst_member_function",{"title":482,"path":483,"stem":484,"icon":459},"友元","\u002Fch06\u002Ffriend","ch06\u002Ffriend",{"title":486,"path":487,"stem":488,"icon":459},"类外定义成员函数","\u002Fch06\u002Fnoninline_member_function","ch06\u002Fnoninline_member_function",{"title":490,"path":491,"stem":492,"icon":459},"非成员的运算符重载","\u002Fch06\u002Fnonmember_operator","ch06\u002Fnonmember_operator",{"title":494,"path":495,"stem":496,"icon":459},"特殊运算符重载","\u002Fch06\u002Fspecial_operator_overload","ch06\u002Fspecial_operator_overload",{"title":498,"path":499,"stem":500,"icon":459},"静态成员","\u002Fch06\u002Fstatic_member","ch06\u002Fstatic_member",{"title":93,"path":502,"stem":503,"icon":459},"\u002Fch06\u002Fsummary","ch06\u002Fsummary",{"title":505,"path":506,"stem":507,"icon":459},"`this` 指针","\u002Fch06\u002Fthis","ch06\u002Fthis",{"title":509,"path":510,"stem":511,"children":512,"icon":190},"第七章 继承与多态","\u002Fch07","ch07\u002Findex",[513,514,541,545,549,580],{"title":509,"path":510,"stem":511,"icon":190},{"title":515,"icon":516,"path":517,"stem":518,"children":519},"继承关系","i-lucide-share","\u002Fch07\u002Finheritance","ch07\u002Finheritance\u002Findex",[520,521,525,529,533,537],{"title":515,"path":517,"stem":518,"icon":516},{"title":522,"path":523,"stem":524,"icon":516},"关于成员名","\u002Fch07\u002Finheritance\u002Fabout_member_name","ch07\u002Finheritance\u002Fabout_member_name",{"title":526,"path":527,"stem":528,"icon":516},"派生类的构造","\u002Fch07\u002Finheritance\u002Fderived_constructor","ch07\u002Finheritance\u002Fderived_constructor",{"title":530,"path":531,"stem":532,"icon":516},"继承中的隐式转换","\u002Fch07\u002Finheritance\u002Fimplicit_cast_in_inheritance","ch07\u002Finheritance\u002Fimplicit_cast_in_inheritance",{"title":534,"path":535,"stem":536,"icon":516},"其它小问题","\u002Fch07\u002Finheritance\u002Fmisc","ch07\u002Finheritance\u002Fmisc",{"title":538,"path":539,"stem":540,"icon":516},"保护成员","\u002Fch07\u002Finheritance\u002Fprotected_member","ch07\u002Finheritance\u002Fprotected_member",{"title":542,"path":543,"stem":544,"icon":190},"多重继承","\u002Fch07\u002Fmi","ch07\u002Fmi",{"title":546,"path":547,"stem":548,"icon":190},"简单的对象关系","\u002Fch07\u002Fobject_relationships","ch07\u002Fobject_relationships",{"title":550,"icon":551,"path":552,"stem":553,"children":554},"多态","i-lucide-refresh","\u002Fch07\u002Fpolymorphism","ch07\u002Fpolymorphism\u002Findex",[555,556,560,564,568,572,576],{"title":550,"path":552,"stem":553,"icon":551},{"title":557,"path":558,"stem":559,"icon":551},"抽象类","\u002Fch07\u002Fpolymorphism\u002Fabstract_class","ch07\u002Fpolymorphism\u002Fabstract_class",{"title":561,"path":562,"stem":563,"icon":551},"C++ 风格类型转换","\u002Fch07\u002Fpolymorphism\u002Fcpp_cast","ch07\u002Fpolymorphism\u002Fcpp_cast",{"title":565,"path":566,"stem":567,"icon":551},"`override` 与 `final`","\u002Fch07\u002Fpolymorphism\u002Foverride_and_final","ch07\u002Fpolymorphism\u002Foverride_and_final",{"title":569,"path":570,"stem":571,"icon":551},"RTTI","\u002Fch07\u002Fpolymorphism\u002Frtti","ch07\u002Fpolymorphism\u002Frtti",{"title":573,"path":574,"stem":575,"icon":551},"虚析构函数","\u002Fch07\u002Fpolymorphism\u002Fvirtual_destructor","ch07\u002Fpolymorphism\u002Fvirtual_destructor",{"title":577,"path":578,"stem":579,"icon":551},"虚函数","\u002Fch07\u002Fpolymorphism\u002Fvirtual_function","ch07\u002Fpolymorphism\u002Fvirtual_function",{"title":93,"path":581,"stem":582,"icon":190},"\u002Fch07\u002Fsummary","ch07\u002Fsummary",{"title":584,"icon":585,"path":586,"stem":587,"children":588},"第八章 模板基础","i-lucide-layout-template","\u002Fch08","ch08",[589,591,595,599,603,607,646],{"title":584,"path":586,"stem":590,"icon":585},"ch08\u002Findex",{"title":592,"path":593,"stem":594,"icon":585},"类模板","\u002Fch08\u002Fclass_template","ch08\u002Fclass_template",{"title":596,"path":597,"stem":598,"icon":585},"默认实参","\u002Fch08\u002Fdefault_argument","ch08\u002Fdefault_argument",{"title":600,"path":601,"stem":602,"icon":585},"函数模板","\u002Fch08\u002Ffunction_template","ch08\u002Ffunction_template",{"title":604,"path":605,"stem":606,"icon":585},"非类型模板参数","\u002Fch08\u002Fnontype_template_param","ch08\u002Fnontype_template_param",{"title":608,"icon":609,"path":610,"stem":611,"children":612},"STL 容器和迭代器","i-lucide-container","\u002Fch08\u002Fstl_containers","ch08\u002Fstl_containers\u002Findex",[613,614,618,622,626,630,634,638,642],{"title":608,"path":610,"stem":611,"icon":609},{"title":615,"path":616,"stem":617,"icon":609},"容器适配器","\u002Fch08\u002Fstl_containers\u002Fadaptors","ch08\u002Fstl_containers\u002Fadaptors",{"title":619,"path":620,"stem":621,"icon":609},"迭代器的概念","\u002Fch08\u002Fstl_containers\u002Fiterator_concept","ch08\u002Fstl_containers\u002Fiterator_concept",{"title":623,"path":624,"stem":625,"icon":609},"初识迭代器","\u002Fch08\u002Fstl_containers\u002Fiterator_glance","ch08\u002Fstl_containers\u002Fiterator_glance",{"title":627,"path":628,"stem":629,"icon":609},"迭代器的用途","\u002Fch08\u002Fstl_containers\u002Fiterator_usage","ch08\u002Fstl_containers\u002Fiterator_usage",{"title":631,"path":632,"stem":633,"icon":609},"`std::map`","\u002Fch08\u002Fstl_containers\u002Fmap","ch08\u002Fstl_containers\u002Fmap",{"title":635,"path":636,"stem":637,"icon":609},"其它顺序容器","\u002Fch08\u002Fstl_containers\u002Fother_sequence","ch08\u002Fstl_containers\u002Fother_sequence",{"title":639,"path":640,"stem":641,"icon":609},"`std::set`","\u002Fch08\u002Fstl_containers\u002Fset","ch08\u002Fstl_containers\u002Fset",{"title":643,"path":644,"stem":645,"icon":609},"`std::vector`","\u002Fch08\u002Fstl_containers\u002Fvector","ch08\u002Fstl_containers\u002Fvector",{"title":93,"path":647,"stem":648,"icon":585},"\u002Fch08\u002Fsummary","ch08\u002Fsummary",{"title":650,"icon":651,"path":652,"stem":653,"children":654},"第九章 链接","i-lucide-link","\u002Fch09","ch09",[655,657,661,665,669,673,677,681],{"title":650,"path":652,"stem":656,"icon":651},"ch09\u002Findex",{"title":658,"path":659,"stem":660,"icon":651},"C 中的链接","\u002Fch09\u002Fc_linking","ch09\u002Fc_linking",{"title":662,"path":663,"stem":664,"icon":651},"多文件编译实践","\u002Fch09\u002Fcompile_multiple_files","ch09\u002Fcompile_multiple_files",{"title":666,"path":667,"stem":668,"icon":651},"模板中的友元","\u002Fch09\u002Ffriend_in_template","ch09\u002Ffriend_in_template",{"title":670,"path":671,"stem":672,"icon":651},"内联","\u002Fch09\u002Finline","ch09\u002Finline",{"title":674,"path":675,"stem":676,"icon":651},"单一定义原则","\u002Fch09\u002Fodr","ch09\u002Fodr",{"title":678,"path":679,"stem":680,"icon":651},"符号和连接","\u002Fch09\u002Fsymbol_and_linkage","ch09\u002Fsymbol_and_linkage",{"title":682,"path":683,"stem":684,"icon":651},"模板的链接","\u002Fch09\u002Ftemplate_linking","ch09\u002Ftemplate_linking",{"title":686,"icon":687,"path":688,"stem":689,"children":690},"第十章 常用库介绍 \u003CBadge type=\"warning\" text=\"TBC\" \u002F>","i-lucide-hard-drive","\u002Fch10","ch10",[691,694,717,732,736,740],{"title":692,"path":688,"stem":693,"icon":687},"第十章 常用库介绍","ch10\u002Findex",{"title":695,"icon":696,"path":697,"stem":698,"children":699},"代数数据类型","i-lucide-shapes","\u002Fch10\u002Fadt","ch10\u002Fadt\u002Findex",[700,701,705,709,713],{"title":695,"path":697,"stem":698,"icon":696},{"title":702,"path":703,"stem":704,"icon":696},"顶类型 `std::any`","\u002Fch10\u002Fadt\u002Fany","ch10\u002Fadt\u002Fany",{"title":706,"path":707,"stem":708,"icon":696},"底类型","\u002Fch10\u002Fadt\u002Fnoreturn","ch10\u002Fadt\u002Fnoreturn",{"title":710,"path":711,"stem":712,"icon":696},"通用积类型 `std::tuple`","\u002Fch10\u002Fadt\u002Ftuple","ch10\u002Fadt\u002Ftuple",{"title":714,"path":715,"stem":716,"icon":696},"通用和类型 `std::variant`","\u002Fch10\u002Fadt\u002Fvariant","ch10\u002Fadt\u002Fvariant",{"title":718,"icon":719,"path":720,"stem":721,"children":722},"文件读写","i-lucide-file-text","\u002Fch10\u002Ffile_io","ch10\u002Ffile_io\u002Findex",[723,724,728],{"title":718,"path":720,"stem":721,"icon":719},{"title":725,"path":726,"stem":727,"icon":719},"C 风格输入输出","\u002Fch10\u002Ffile_io\u002Fc_io","ch10\u002Ffile_io\u002Fc_io",{"title":729,"path":730,"stem":731,"icon":719},"流式输入输出","\u002Fch10\u002Ffile_io\u002Fstream","ch10\u002Ffile_io\u002Fstream",{"title":733,"path":734,"stem":735,"icon":687},"文件系统","\u002Fch10\u002Ffilesystem","ch10\u002Ffilesystem",{"title":737,"path":738,"stem":739,"icon":687},"伪随机数生成","\u002Fch10\u002Frandom","ch10\u002Frandom",{"title":741,"path":742,"stem":743,"children":744,"icon":746},"移动语义与智能指针","\u002Fch10\u002Fsmart_pointer","ch10\u002Fsmart_pointer\u002Findex",[745,747,751,755,759,763],{"title":741,"path":742,"stem":743,"icon":746},"i-lucide-pointer",{"title":748,"path":749,"stem":750,"icon":746},"`std::move` 与转发引用","\u002Fch10\u002Fsmart_pointer\u002Fmove_and_forward","ch10\u002Fsmart_pointer\u002Fmove_and_forward",{"title":752,"path":753,"stem":754,"icon":746},"所有权","\u002Fch10\u002Fsmart_pointer\u002Fownership","ch10\u002Fsmart_pointer\u002Fownership",{"title":756,"path":757,"stem":758,"icon":746},"右值引用","\u002Fch10\u002Fsmart_pointer\u002Frvalue_reference","ch10\u002Fsmart_pointer\u002Frvalue_reference",{"title":760,"path":761,"stem":762,"icon":746},"`std::shared_ptr`","\u002Fch10\u002Fsmart_pointer\u002Fshared_ptr","ch10\u002Fsmart_pointer\u002Fshared_ptr",{"title":764,"path":765,"stem":766,"icon":746},"特殊成员函数","\u002Fch10\u002Fsmart_pointer\u002Fspecial_member_function","ch10\u002Fsmart_pointer\u002Fspecial_member_function",{"title":768,"icon":769,"path":770,"stem":771,"children":772},"第十一章 函数式编程","i-lucide-sparkles","\u002Fch11","ch11",[773,775,794,821,825],{"title":768,"path":770,"stem":774,"icon":769},"ch11\u002Findex",{"title":776,"icon":777,"path":778,"stem":779,"children":780},"语法进阶","i-lucide-graduation-cap","\u002Fch11\u002Fadvanced","ch11\u002Fadvanced\u002Findex",[781,782,786,790],{"title":776,"path":778,"stem":779,"icon":777},{"title":783,"path":784,"stem":785,"icon":777},"实参依赖查找","\u002Fch11\u002Fadvanced\u002Fadl","ch11\u002Fadvanced\u002Fadl",{"title":787,"path":788,"stem":789,"icon":777},"可调用","\u002Fch11\u002Fadvanced\u002Fcallable","ch11\u002Fadvanced\u002Fcallable",{"title":791,"path":792,"stem":793,"icon":777},"预置比较","\u002Fch11\u002Fadvanced\u002Fdefaulted_compare","ch11\u002Fadvanced\u002Fdefaulted_compare",{"title":795,"icon":796,"path":797,"stem":798,"children":799},"语法基础","i-lucide-book-text","\u002Fch11\u002Fgrammar","ch11\u002Fgrammar\u002Findex",[800,801,805,809,813,817],{"title":795,"path":797,"stem":798,"icon":796},{"title":802,"path":803,"stem":804,"icon":796},"闭包","\u002Fch11\u002Fgrammar\u002Fclosure","ch11\u002Fgrammar\u002Fclosure",{"title":806,"path":807,"stem":808,"icon":796},"函数也即对象","\u002Fch11\u002Fgrammar\u002Ffunction_as_object","ch11\u002Fgrammar\u002Ffunction_as_object",{"title":810,"path":811,"stem":812,"icon":796},"高阶函数","\u002Fch11\u002Fgrammar\u002Fhigher_order_function","ch11\u002Fgrammar\u002Fhigher_order_function",{"title":814,"path":815,"stem":816,"icon":796},"Lambda 表达式","\u002Fch11\u002Fgrammar\u002Flambda","ch11\u002Fgrammar\u002Flambda",{"title":818,"path":819,"stem":820,"icon":796},"Lambda 表达式捕获","\u002Fch11\u002Fgrammar\u002Flambda_capture","ch11\u002Fgrammar\u002Flambda_capture",{"title":822,"path":823,"stem":824,"icon":769},"`std::sort`","\u002Fch11\u002Fstd_sort","ch11\u002Fstd_sort",{"title":826,"icon":827,"path":828,"stem":829,"children":830},"STL 算法","i-lucide-sort-asc","\u002Fch11\u002Fstl_algorithms","ch11\u002Fstl_algorithms\u002Findex",[831,832,836,840,844,848,852,856,860],{"title":826,"path":828,"stem":829,"icon":827},{"title":833,"path":834,"stem":835,"icon":827},"迁移到 STLv1","\u002Fch11\u002Fstl_algorithms\u002Fcompare_with_legacy","ch11\u002Fstl_algorithms\u002Fcompare_with_legacy",{"title":837,"path":838,"stem":839,"icon":827},"复制","\u002Fch11\u002Fstl_algorithms\u002Fcopy","ch11\u002Fstl_algorithms\u002Fcopy",{"title":841,"path":842,"stem":843,"icon":827},"筛选","\u002Fch11\u002Fstl_algorithms\u002Ffilter","ch11\u002Fstl_algorithms\u002Ffilter",{"title":845,"path":846,"stem":847,"icon":827},"其它算法","\u002Fch11\u002Fstl_algorithms\u002Fothers","ch11\u002Fstl_algorithms\u002Fothers",{"title":849,"path":850,"stem":851,"icon":827},"初识范围","\u002Fch11\u002Fstl_algorithms\u002Frange","ch11\u002Fstl_algorithms\u002Frange",{"title":853,"path":854,"stem":855,"icon":827},"归约","\u002Fch11\u002Fstl_algorithms\u002Freduce","ch11\u002Fstl_algorithms\u002Freduce",{"title":857,"path":858,"stem":859,"icon":827},"排序","\u002Fch11\u002Fstl_algorithms\u002Fsort","ch11\u002Fstl_algorithms\u002Fsort",{"title":861,"path":862,"stem":863,"icon":827},"变换","\u002Fch11\u002Fstl_algorithms\u002Ftransform","ch11\u002Fstl_algorithms\u002Ftransform",{"title":865,"icon":866,"path":867,"stem":868,"children":869},"第十二章 模板","i-lucide-git-fork","\u002Fch12","ch12",[870,873,877,881,885],{"title":871,"path":867,"stem":872,"icon":866},"第十二章 模板进阶","ch12\u002Findex",{"title":874,"path":875,"stem":876},"C++20 概念","\u002Fch12\u002Fconcepts","ch12\u002Fconcepts",{"title":878,"path":879,"stem":880},"模板元编程","\u002Fch12\u002Fmetaprogramming","ch12\u002Fmetaprogramming",{"title":882,"path":883,"stem":884},"模板特化与偏特化","\u002Fch12\u002Fspecialization","ch12\u002Fspecialization",{"title":886,"icon":887,"path":888,"stem":889,"children":890},"静态派发","i-lucide-route","\u002Fch12\u002Fstatic_dispatch","ch12\u002Fstatic_dispatch\u002Findex",[891,892,896],{"title":886,"path":888,"stem":889},{"title":893,"path":894,"stem":895},"定制点","\u002Fch12\u002Fstatic_dispatch\u002Fcustomize_point","ch12\u002Fstatic_dispatch\u002Fcustomize_point",{"title":897,"path":898,"stem":899},"类型擦除","\u002Fch12\u002Fstatic_dispatch\u002Ftype_erasure","ch12\u002Fstatic_dispatch\u002Ftype_erasure",{"title":901,"path":902,"stem":903,"icon":6},"后记","\u002Fpostscript","postscript",{"title":905,"path":906,"stem":907,"icon":908},"技术信息","\u002Ftechnical_info","technical_info","i-lucide-info",{"id":910,"title":596,"body":911,"description":920,"extension":2355,"links":2356,"meta":2357,"navigation":2358,"path":597,"seo":2359,"stem":598,"__hash__":2360},"docs\u002Fch08\u002Fdefault_argument.md",{"type":912,"value":913,"toc":2351},"minimark",[914,917,921,925,928,1092,1095,1161,1164,1212,1223,1226,1359,1367,1479,1482,1582,1589,1726,1733,1794,1797,1827,1830,1833,1836,1839,1943,1946,1959,1966,1969,2069,2072,2195,2198,2303,2306,2347],[915,916,596],"h1",{"id":596},[918,919,920],"p",{},"我在这里穿插一个额外的知识点：默认实参。",[922,923,924],"h2",{"id":924},"函数默认实参",[918,926,927],{},"假设我现在有一个函数",[929,930,935],"pre",{"className":931,"code":932,"language":933,"meta":934,"style":934},"language-cpp shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","#include \u003Ciostream>\nvoid greeting(const char* who) {\n    std::cout \u003C\u003C \"Hello, \" \u003C\u003C who \u003C\u003C std::endl;\n}\nint main() {\n    greeting(\"world\");\n    greeting(\"Alice\");\n}\n","cpp","",[936,937,938,958,988,1033,1039,1053,1071,1087],"code",{"__ignoreMap":934},[939,940,943,947,951,955],"span",{"class":941,"line":942},"line",1,[939,944,946],{"class":945},"s7zQu","#include",[939,948,950],{"class":949},"sMK4o"," \u003C",[939,952,954],{"class":953},"sfazB","iostream",[939,956,957],{"class":949},">\n",[939,959,961,965,969,972,975,978,982,985],{"class":941,"line":960},2,[939,962,964],{"class":963},"spNyl","void",[939,966,968],{"class":967},"s2Zo4"," greeting",[939,970,971],{"class":949},"(",[939,973,974],{"class":963},"const",[939,976,977],{"class":963}," char*",[939,979,981],{"class":980},"sHdIc"," who",[939,983,984],{"class":949},")",[939,986,987],{"class":949}," {\n",[939,989,991,995,998,1002,1005,1008,1011,1014,1017,1020,1022,1025,1027,1030],{"class":941,"line":990},3,[939,992,994],{"class":993},"sBMFI","    std",[939,996,997],{"class":949},"::",[939,999,1001],{"class":1000},"sTEyZ","cout ",[939,1003,1004],{"class":949},"\u003C\u003C",[939,1006,1007],{"class":949}," \"",[939,1009,1010],{"class":953},"Hello, ",[939,1012,1013],{"class":949},"\"",[939,1015,1016],{"class":949}," \u003C\u003C",[939,1018,1019],{"class":1000}," who ",[939,1021,1004],{"class":949},[939,1023,1024],{"class":993}," std",[939,1026,997],{"class":949},[939,1028,1029],{"class":1000},"endl",[939,1031,1032],{"class":949},";\n",[939,1034,1036],{"class":941,"line":1035},4,[939,1037,1038],{"class":949},"}\n",[939,1040,1042,1045,1048,1051],{"class":941,"line":1041},5,[939,1043,1044],{"class":963},"int",[939,1046,1047],{"class":967}," main",[939,1049,1050],{"class":949},"()",[939,1052,987],{"class":949},[939,1054,1056,1059,1061,1063,1066,1068],{"class":941,"line":1055},6,[939,1057,1058],{"class":967},"    greeting",[939,1060,971],{"class":949},[939,1062,1013],{"class":949},[939,1064,1065],{"class":953},"world",[939,1067,1013],{"class":949},[939,1069,1070],{"class":949},");\n",[939,1072,1074,1076,1078,1080,1083,1085],{"class":941,"line":1073},7,[939,1075,1058],{"class":967},[939,1077,971],{"class":949},[939,1079,1013],{"class":949},[939,1081,1082],{"class":953},"Alice",[939,1084,1013],{"class":949},[939,1086,1070],{"class":949},[939,1088,1090],{"class":941,"line":1089},8,[939,1091,1038],{"class":949},[918,1093,1094],{},"我们可以给它的参数提供一个默认值：",[929,1096,1098],{"className":931,"code":1097,"language":933,"meta":934,"style":934},"void greeting(const char* who = \"world\") {\n    std::cout \u003C\u003C \"Hello, \" \u003C\u003C who \u003C\u003C std::endl;\n}\n",[936,1099,1100,1127,1157],{"__ignoreMap":934},[939,1101,1102,1104,1106,1108,1110,1112,1114,1117,1119,1121,1123,1125],{"class":941,"line":942},[939,1103,964],{"class":963},[939,1105,968],{"class":967},[939,1107,971],{"class":949},[939,1109,974],{"class":963},[939,1111,977],{"class":963},[939,1113,981],{"class":980},[939,1115,1116],{"class":949}," =",[939,1118,1007],{"class":949},[939,1120,1065],{"class":953},[939,1122,1013],{"class":949},[939,1124,984],{"class":949},[939,1126,987],{"class":949},[939,1128,1129,1131,1133,1135,1137,1139,1141,1143,1145,1147,1149,1151,1153,1155],{"class":941,"line":960},[939,1130,994],{"class":993},[939,1132,997],{"class":949},[939,1134,1001],{"class":1000},[939,1136,1004],{"class":949},[939,1138,1007],{"class":949},[939,1140,1010],{"class":953},[939,1142,1013],{"class":949},[939,1144,1016],{"class":949},[939,1146,1019],{"class":1000},[939,1148,1004],{"class":949},[939,1150,1024],{"class":993},[939,1152,997],{"class":949},[939,1154,1029],{"class":1000},[939,1156,1032],{"class":949},[939,1158,1159],{"class":941,"line":990},[939,1160,1038],{"class":949},[918,1162,1163],{},"这时，我在调用函数时可以略去带有默认值的参数：",[929,1165,1167],{"className":931,"code":1166,"language":933,"meta":934,"style":934},"int main() {\n    greeting(); \u002F\u002F 使用默认实参，相当于 greeting(\"world\");\n    greeting(\"Alice\"); \u002F\u002F 不使用默认实参\n}\n",[936,1168,1169,1179,1190,1208],{"__ignoreMap":934},[939,1170,1171,1173,1175,1177],{"class":941,"line":942},[939,1172,1044],{"class":963},[939,1174,1047],{"class":967},[939,1176,1050],{"class":949},[939,1178,987],{"class":949},[939,1180,1181,1183,1186],{"class":941,"line":960},[939,1182,1058],{"class":967},[939,1184,1185],{"class":949},"();",[939,1187,1189],{"class":1188},"sHwdD"," \u002F\u002F 使用默认实参，相当于 greeting(\"world\");\n",[939,1191,1192,1194,1196,1198,1200,1202,1205],{"class":941,"line":990},[939,1193,1058],{"class":967},[939,1195,971],{"class":949},[939,1197,1013],{"class":949},[939,1199,1082],{"class":953},[939,1201,1013],{"class":949},[939,1203,1204],{"class":949},");",[939,1206,1207],{"class":1188}," \u002F\u002F 不使用默认实参\n",[939,1209,1210],{"class":941,"line":1035},[939,1211,1038],{"class":949},[918,1213,1214,1215,1218,1219,1222],{},"默认实参就是允许在函数调用表达式中省去末尾若干个实参的语法。它的语法形式是在函数形参后接 ",[936,1216,1217],{},"@\"=\" 默认实参值@","。当调用表达式略去这个实参时，相当于将 ",[936,1220,1221],{},"@默认实参值@"," 当做实参传入了函数。",[918,1224,1225],{},"换句话说，你可以将默认实参理解成提供了若干个新的重载：",[929,1227,1229],{"className":931,"code":1228,"language":933,"meta":934,"style":934},"void greeting() {\n    const char* who = \"world\";\n    std::cout \u003C\u003C \"Hello, \" \u003C\u003C who \u003C\u003C std::endl;\n}\nvoid greeting(const char* who = \"world\") {\n    std::cout \u003C\u003C \"Hello, \" \u003C\u003C who \u003C\u003C std::endl;\n}\n",[936,1230,1231,1241,1265,1295,1299,1325,1355],{"__ignoreMap":934},[939,1232,1233,1235,1237,1239],{"class":941,"line":942},[939,1234,964],{"class":963},[939,1236,968],{"class":967},[939,1238,1050],{"class":949},[939,1240,987],{"class":949},[939,1242,1243,1246,1249,1252,1254,1257,1259,1261,1263],{"class":941,"line":960},[939,1244,1245],{"class":963},"    const",[939,1247,1248],{"class":963}," char",[939,1250,1251],{"class":949},"*",[939,1253,1019],{"class":1000},[939,1255,1256],{"class":949},"=",[939,1258,1007],{"class":949},[939,1260,1065],{"class":953},[939,1262,1013],{"class":949},[939,1264,1032],{"class":949},[939,1266,1267,1269,1271,1273,1275,1277,1279,1281,1283,1285,1287,1289,1291,1293],{"class":941,"line":990},[939,1268,994],{"class":993},[939,1270,997],{"class":949},[939,1272,1001],{"class":1000},[939,1274,1004],{"class":949},[939,1276,1007],{"class":949},[939,1278,1010],{"class":953},[939,1280,1013],{"class":949},[939,1282,1016],{"class":949},[939,1284,1019],{"class":1000},[939,1286,1004],{"class":949},[939,1288,1024],{"class":993},[939,1290,997],{"class":949},[939,1292,1029],{"class":1000},[939,1294,1032],{"class":949},[939,1296,1297],{"class":941,"line":1035},[939,1298,1038],{"class":949},[939,1300,1301,1303,1305,1307,1309,1311,1313,1315,1317,1319,1321,1323],{"class":941,"line":1041},[939,1302,964],{"class":963},[939,1304,968],{"class":967},[939,1306,971],{"class":949},[939,1308,974],{"class":963},[939,1310,977],{"class":963},[939,1312,981],{"class":980},[939,1314,1116],{"class":949},[939,1316,1007],{"class":949},[939,1318,1065],{"class":953},[939,1320,1013],{"class":949},[939,1322,984],{"class":949},[939,1324,987],{"class":949},[939,1326,1327,1329,1331,1333,1335,1337,1339,1341,1343,1345,1347,1349,1351,1353],{"class":941,"line":1055},[939,1328,994],{"class":993},[939,1330,997],{"class":949},[939,1332,1001],{"class":1000},[939,1334,1004],{"class":949},[939,1336,1007],{"class":949},[939,1338,1010],{"class":953},[939,1340,1013],{"class":949},[939,1342,1016],{"class":949},[939,1344,1019],{"class":1000},[939,1346,1004],{"class":949},[939,1348,1024],{"class":993},[939,1350,997],{"class":949},[939,1352,1029],{"class":1000},[939,1354,1032],{"class":949},[939,1356,1357],{"class":941,"line":1073},[939,1358,1038],{"class":949},[918,1360,1361,1362,1366],{},"函数的默认实参",[1363,1364,1365],"strong",{},"只能在末尾","的几个参数提供。如：",[929,1368,1370],{"className":931,"code":1369,"language":933,"meta":934,"style":934},"void f(int a, int b = 42) { } \u002F\u002F OK\nvoid f(int a = 42, int b) { } \u002F\u002F 编译错误，默认实参不在结尾\nvoid f(int a = 42, int b = 56) { } \u002F\u002F OK，默认实参都在结尾\n",[936,1371,1372,1412,1443],{"__ignoreMap":934},[939,1373,1374,1376,1379,1381,1383,1386,1389,1392,1395,1397,1401,1403,1406,1409],{"class":941,"line":942},[939,1375,964],{"class":963},[939,1377,1378],{"class":967}," f",[939,1380,971],{"class":949},[939,1382,1044],{"class":963},[939,1384,1385],{"class":980}," a",[939,1387,1388],{"class":949},",",[939,1390,1391],{"class":963}," int",[939,1393,1394],{"class":980}," b",[939,1396,1116],{"class":949},[939,1398,1400],{"class":1399},"sbssI"," 42",[939,1402,984],{"class":949},[939,1404,1405],{"class":949}," {",[939,1407,1408],{"class":949}," }",[939,1410,1411],{"class":1188}," \u002F\u002F OK\n",[939,1413,1414,1416,1418,1420,1422,1424,1426,1428,1430,1432,1434,1436,1438,1440],{"class":941,"line":960},[939,1415,964],{"class":963},[939,1417,1378],{"class":967},[939,1419,971],{"class":949},[939,1421,1044],{"class":963},[939,1423,1385],{"class":980},[939,1425,1116],{"class":949},[939,1427,1400],{"class":1399},[939,1429,1388],{"class":949},[939,1431,1391],{"class":963},[939,1433,1394],{"class":980},[939,1435,984],{"class":949},[939,1437,1405],{"class":949},[939,1439,1408],{"class":949},[939,1441,1442],{"class":1188}," \u002F\u002F 编译错误，默认实参不在结尾\n",[939,1444,1445,1447,1449,1451,1453,1455,1457,1459,1461,1463,1465,1467,1470,1472,1474,1476],{"class":941,"line":990},[939,1446,964],{"class":963},[939,1448,1378],{"class":967},[939,1450,971],{"class":949},[939,1452,1044],{"class":963},[939,1454,1385],{"class":980},[939,1456,1116],{"class":949},[939,1458,1400],{"class":1399},[939,1460,1388],{"class":949},[939,1462,1391],{"class":963},[939,1464,1394],{"class":980},[939,1466,1116],{"class":949},[939,1468,1469],{"class":1399}," 56",[939,1471,984],{"class":949},[939,1473,1405],{"class":949},[939,1475,1408],{"class":949},[939,1477,1478],{"class":1188}," \u002F\u002F OK，默认实参都在结尾\n",[918,1480,1481],{},"在调用带有默认实参的函数时，也只能省略末尾的若干个参数：",[929,1483,1485],{"className":931,"code":1484,"language":933,"meta":934,"style":934},"void f(int a, int b = 42, int c = 56) { }\nint main() {\n    f(1);      \u002F\u002F 相当于 f(1, 42, 56); 省略了 b 和 c\n    f(1, 2);   \u002F\u002F 相当于 f(1, 2, 56); 省略了 c\n\u002F\u002F  f(1, , 3); \u002F\u002F 错误：没有这种语法\n}\n",[936,1486,1487,1527,1537,1552,1570,1578],{"__ignoreMap":934},[939,1488,1489,1491,1493,1495,1497,1499,1501,1503,1505,1507,1509,1511,1513,1516,1518,1520,1522,1524],{"class":941,"line":942},[939,1490,964],{"class":963},[939,1492,1378],{"class":967},[939,1494,971],{"class":949},[939,1496,1044],{"class":963},[939,1498,1385],{"class":980},[939,1500,1388],{"class":949},[939,1502,1391],{"class":963},[939,1504,1394],{"class":980},[939,1506,1116],{"class":949},[939,1508,1400],{"class":1399},[939,1510,1388],{"class":949},[939,1512,1391],{"class":963},[939,1514,1515],{"class":980}," c",[939,1517,1116],{"class":949},[939,1519,1469],{"class":1399},[939,1521,984],{"class":949},[939,1523,1405],{"class":949},[939,1525,1526],{"class":949}," }\n",[939,1528,1529,1531,1533,1535],{"class":941,"line":960},[939,1530,1044],{"class":963},[939,1532,1047],{"class":967},[939,1534,1050],{"class":949},[939,1536,987],{"class":949},[939,1538,1539,1542,1544,1547,1549],{"class":941,"line":990},[939,1540,1541],{"class":967},"    f",[939,1543,971],{"class":949},[939,1545,1546],{"class":1399},"1",[939,1548,1204],{"class":949},[939,1550,1551],{"class":1188},"      \u002F\u002F 相当于 f(1, 42, 56); 省略了 b 和 c\n",[939,1553,1554,1556,1558,1560,1562,1565,1567],{"class":941,"line":1035},[939,1555,1541],{"class":967},[939,1557,971],{"class":949},[939,1559,1546],{"class":1399},[939,1561,1388],{"class":949},[939,1563,1564],{"class":1399}," 2",[939,1566,1204],{"class":949},[939,1568,1569],{"class":1188},"   \u002F\u002F 相当于 f(1, 2, 56); 省略了 c\n",[939,1571,1572,1575],{"class":941,"line":1041},[939,1573,1574],{"class":1188},"\u002F\u002F  f(1, , 3);",[939,1576,1577],{"class":1188}," \u002F\u002F 错误：没有这种语法\n",[939,1579,1580],{"class":941,"line":1055},[939,1581,1038],{"class":949},[918,1583,1584,1585,1588],{},"默认实参的值可以是表达式，但它有一些限制（如不能（在求值语境下）使用局部变量、",[936,1586,1587],{},"this"," 等）。表达式的求值是在函数调用期间完成的，求得的值会用来初始化函数形参。",[929,1590,1592],{"className":931,"code":1591,"language":933,"meta":934,"style":934},"#include \u003Ciostream>\nint x{0};\nvoid f(int a = 2 * (++x)) { \u002F\u002F 默认实参为 2 * (++x)，每次调用求值\n    std::cout \u003C\u003C a \u003C\u003C std::endl;\n}\nint main() {\n    f();  \u002F\u002F 对默认实参求值\n    f(1); \u002F\u002F 不对默认实参求值\n    f();  \u002F\u002F 对默认实参求值\n}\n",[936,1593,1594,1604,1620,1653,1676,1680,1690,1699,1712,1721],{"__ignoreMap":934},[939,1595,1596,1598,1600,1602],{"class":941,"line":942},[939,1597,946],{"class":945},[939,1599,950],{"class":949},[939,1601,954],{"class":953},[939,1603,957],{"class":949},[939,1605,1606,1608,1611,1614,1617],{"class":941,"line":960},[939,1607,1044],{"class":963},[939,1609,1610],{"class":1000}," x",[939,1612,1613],{"class":949},"{",[939,1615,1616],{"class":1399},"0",[939,1618,1619],{"class":949},"};\n",[939,1621,1622,1624,1626,1628,1630,1632,1634,1636,1639,1642,1645,1648,1650],{"class":941,"line":990},[939,1623,964],{"class":963},[939,1625,1378],{"class":967},[939,1627,971],{"class":949},[939,1629,1044],{"class":963},[939,1631,1385],{"class":980},[939,1633,1116],{"class":949},[939,1635,1564],{"class":1399},[939,1637,1638],{"class":949}," *",[939,1640,1641],{"class":949}," (++",[939,1643,1644],{"class":1000},"x",[939,1646,1647],{"class":949},"))",[939,1649,1405],{"class":949},[939,1651,1652],{"class":1188}," \u002F\u002F 默认实参为 2 * (++x)，每次调用求值\n",[939,1654,1655,1657,1659,1661,1663,1666,1668,1670,1672,1674],{"class":941,"line":1035},[939,1656,994],{"class":993},[939,1658,997],{"class":949},[939,1660,1001],{"class":1000},[939,1662,1004],{"class":949},[939,1664,1665],{"class":1000}," a ",[939,1667,1004],{"class":949},[939,1669,1024],{"class":993},[939,1671,997],{"class":949},[939,1673,1029],{"class":1000},[939,1675,1032],{"class":949},[939,1677,1678],{"class":941,"line":1041},[939,1679,1038],{"class":949},[939,1681,1682,1684,1686,1688],{"class":941,"line":1055},[939,1683,1044],{"class":963},[939,1685,1047],{"class":967},[939,1687,1050],{"class":949},[939,1689,987],{"class":949},[939,1691,1692,1694,1696],{"class":941,"line":1073},[939,1693,1541],{"class":967},[939,1695,1185],{"class":949},[939,1697,1698],{"class":1188},"  \u002F\u002F 对默认实参求值\n",[939,1700,1701,1703,1705,1707,1709],{"class":941,"line":1089},[939,1702,1541],{"class":967},[939,1704,971],{"class":949},[939,1706,1546],{"class":1399},[939,1708,1204],{"class":949},[939,1710,1711],{"class":1188}," \u002F\u002F 不对默认实参求值\n",[939,1713,1715,1717,1719],{"class":941,"line":1714},9,[939,1716,1541],{"class":967},[939,1718,1185],{"class":949},[939,1720,1698],{"class":1188},[939,1722,1724],{"class":941,"line":1723},10,[939,1725,1038],{"class":949},[918,1727,1728,1729,1732],{},"如果函数被多次声明，则默认实参",[1363,1730,1731],{},"只能出现在其中一次声明","的位置上。同一形参位置多次出现默认实参是编译错误：",[929,1734,1736],{"className":931,"code":1735,"language":933,"meta":934,"style":934},"    void f(int a, int b = 42);\n\u002F\u002F  void f(int a, int b = 42); \u002F\u002F 错误：不能多次提供 b 的默认实参\n    void f(int a, int b);      \u002F\u002F OK\n",[936,1737,1738,1763,1771],{"__ignoreMap":934},[939,1739,1740,1743,1745,1747,1749,1751,1753,1755,1757,1759,1761],{"class":941,"line":942},[939,1741,1742],{"class":963},"    void",[939,1744,1378],{"class":967},[939,1746,971],{"class":949},[939,1748,1044],{"class":963},[939,1750,1385],{"class":980},[939,1752,1388],{"class":949},[939,1754,1391],{"class":963},[939,1756,1394],{"class":980},[939,1758,1116],{"class":949},[939,1760,1400],{"class":1399},[939,1762,1070],{"class":949},[939,1764,1765,1768],{"class":941,"line":960},[939,1766,1767],{"class":1188},"\u002F\u002F  void f(int a, int b = 42);",[939,1769,1770],{"class":1188}," \u002F\u002F 错误：不能多次提供 b 的默认实参\n",[939,1772,1773,1775,1777,1779,1781,1783,1785,1787,1789,1791],{"class":941,"line":990},[939,1774,1742],{"class":963},[939,1776,1378],{"class":967},[939,1778,971],{"class":949},[939,1780,1044],{"class":963},[939,1782,1385],{"class":980},[939,1784,1388],{"class":949},[939,1786,1391],{"class":963},[939,1788,1394],{"class":980},[939,1790,1204],{"class":949},[939,1792,1793],{"class":1188},"      \u002F\u002F OK\n",[918,1795,1796],{},"提供默认实参的形参可以省略名字。尽管这看上去没有什么用。",[929,1798,1800],{"className":931,"code":1799,"language":933,"meta":934,"style":934},"void f(int a, int = 42); \u002F\u002F 略去第二个形参的名字，但提供默认实参\n",[936,1801,1802],{"__ignoreMap":934},[939,1803,1804,1806,1808,1810,1812,1814,1816,1818,1820,1822,1824],{"class":941,"line":942},[939,1805,964],{"class":963},[939,1807,1378],{"class":967},[939,1809,971],{"class":949},[939,1811,1044],{"class":963},[939,1813,1385],{"class":980},[939,1815,1388],{"class":949},[939,1817,1391],{"class":963},[939,1819,1116],{"class":949},[939,1821,1400],{"class":1399},[939,1823,1204],{"class":949},[939,1825,1826],{"class":1188}," \u002F\u002F 略去第二个形参的名字，但提供默认实参\n",[918,1828,1829],{},"成员函数也可以使用默认实参，但非函数调用的运算符重载不能。",[922,1831,1832],{"id":1832},"默认模板实参",[918,1834,1835],{},"类似地，模板参数也可以提供默认实参。",[918,1837,1838],{},"非类型模板默认实参的写法和函数默认实参非常像：",[929,1840,1842],{"className":931,"code":1841,"language":933,"meta":934,"style":934},"template\u003Cint N = 42, int M = 56>\nint add() {\n    return N + M;\n}\nint main() {\n    add\u003C>();  \u002F\u002F 实例化 add\u003C42, 56>\n    add\u003C1>(); \u002F\u002F 实例化 add\u003C1, 56>\n}\n",[936,1843,1844,1874,1885,1900,1904,1914,1925,1939],{"__ignoreMap":934},[939,1845,1846,1849,1852,1854,1857,1859,1861,1863,1865,1868,1870,1872],{"class":941,"line":942},[939,1847,1848],{"class":963},"template",[939,1850,1851],{"class":949},"\u003C",[939,1853,1044],{"class":963},[939,1855,1856],{"class":993}," N",[939,1858,1116],{"class":949},[939,1860,1400],{"class":1399},[939,1862,1388],{"class":949},[939,1864,1391],{"class":963},[939,1866,1867],{"class":993}," M",[939,1869,1116],{"class":949},[939,1871,1469],{"class":1399},[939,1873,957],{"class":949},[939,1875,1876,1878,1881,1883],{"class":941,"line":960},[939,1877,1044],{"class":963},[939,1879,1880],{"class":967}," add",[939,1882,1050],{"class":949},[939,1884,987],{"class":949},[939,1886,1887,1890,1893,1896,1898],{"class":941,"line":990},[939,1888,1889],{"class":945},"    return",[939,1891,1892],{"class":1000}," N ",[939,1894,1895],{"class":949},"+",[939,1897,1867],{"class":1000},[939,1899,1032],{"class":949},[939,1901,1902],{"class":941,"line":1035},[939,1903,1038],{"class":949},[939,1905,1906,1908,1910,1912],{"class":941,"line":1041},[939,1907,1044],{"class":963},[939,1909,1047],{"class":967},[939,1911,1050],{"class":949},[939,1913,987],{"class":949},[939,1915,1916,1919,1922],{"class":941,"line":1055},[939,1917,1918],{"class":967},"    add",[939,1920,1921],{"class":949},"\u003C>();",[939,1923,1924],{"class":1188},"  \u002F\u002F 实例化 add\u003C42, 56>\n",[939,1926,1927,1929,1931,1933,1936],{"class":941,"line":1073},[939,1928,1918],{"class":967},[939,1930,1851],{"class":949},[939,1932,1546],{"class":1399},[939,1934,1935],{"class":949},">();",[939,1937,1938],{"class":1188}," \u002F\u002F 实例化 add\u003C1, 56>\n",[939,1940,1941],{"class":941,"line":1089},[939,1942,1038],{"class":949},[918,1944,1945],{},"非类型默认模板实参同样也包括如下语法限制：",[1947,1948,1949,1953,1956],"ul",{},[1950,1951,1952],"li",{},"默认模板实参只能在模板形参列表结尾提供；",[1950,1954,1955],{},"模板实参列表中也只能省略结尾的若干个模板实参；",[1950,1957,1958],{},"如果函数模板多次被声明，则同一位置的模板默认实参只能出现在其中一个声明中。",[918,1960,1961,1962,1965],{},"但默认模板实参由于其编译期实例化的特点，要求非类型",[1363,1963,1964],{},"默认模板实参值必须是常量","。这是它与函数默认实参最显著的不同点。",[918,1967,1968],{},"类型模板实参拥有类似的语法：",[929,1970,1972],{"className":931,"code":1971,"language":933,"meta":934,"style":934},"\u002F\u002F int 是类型模板形参 U 的默认模板实参\ntemplate\u003Ctypename T, typename U = int>\nstruct S {\n    T mem1;\n    U mem2;\n};\nint main() {\n    S\u003Cdouble> a; \u002F\u002F 实例化 S\u003Cdouble, int>\n}\n",[936,1973,1974,1979,2005,2015,2023,2030,2034,2044,2065],{"__ignoreMap":934},[939,1975,1976],{"class":941,"line":942},[939,1977,1978],{"class":1188},"\u002F\u002F int 是类型模板形参 U 的默认模板实参\n",[939,1980,1981,1983,1985,1988,1991,1993,1996,1999,2001,2003],{"class":941,"line":960},[939,1982,1848],{"class":963},[939,1984,1851],{"class":949},[939,1986,1987],{"class":963},"typename",[939,1989,1990],{"class":993}," T",[939,1992,1388],{"class":949},[939,1994,1995],{"class":963}," typename",[939,1997,1998],{"class":993}," U",[939,2000,1116],{"class":949},[939,2002,1391],{"class":1000},[939,2004,957],{"class":949},[939,2006,2007,2010,2013],{"class":941,"line":990},[939,2008,2009],{"class":963},"struct",[939,2011,2012],{"class":993}," S",[939,2014,987],{"class":949},[939,2016,2017,2021],{"class":941,"line":1035},[939,2018,2020],{"class":2019},"swJcz","    T mem1",[939,2022,1032],{"class":949},[939,2024,2025,2028],{"class":941,"line":1041},[939,2026,2027],{"class":2019},"    U mem2",[939,2029,1032],{"class":949},[939,2031,2032],{"class":941,"line":1055},[939,2033,1619],{"class":949},[939,2035,2036,2038,2040,2042],{"class":941,"line":1073},[939,2037,1044],{"class":963},[939,2039,1047],{"class":967},[939,2041,1050],{"class":949},[939,2043,987],{"class":949},[939,2045,2046,2049,2051,2054,2057,2059,2062],{"class":941,"line":1089},[939,2047,2048],{"class":1000},"    S",[939,2050,1851],{"class":949},[939,2052,2053],{"class":963},"double",[939,2055,2056],{"class":949},">",[939,2058,1385],{"class":1000},[939,2060,2061],{"class":949},";",[939,2063,2064],{"class":1188}," \u002F\u002F 实例化 S\u003Cdouble, int>\n",[939,2066,2067],{"class":941,"line":1714},[939,2068,1038],{"class":949},[918,2070,2071],{},"类型模板默认实参可以使用一个固定的类型，或者任意之前已经被声明的类型（包括前面的模板形参）组成的“表达式”。这个“表达式”并不是真正的表达式，是指由一些类型通过模板、嵌套类或别名声明等一系列语法组成的新类型。比如：",[929,2073,2075],{"className":931,"code":2074,"language":933,"meta":934,"style":934},"template\u003Ctypename T>\nstruct Helper {\n    T help() { \u002F* [...] *\u002F }\n};\n\u002F\u002F 依赖于 T 的类型“表达式”作为 U 的默认模板实参\ntemplate\u003Ctypename T, typename U = Helper\u003CT>>\nT f() {\n    U helper;\n    return helper.help();\n}\n\u002F\u002F 例：f\u003Cint>(); 实例化 f\u003Cint, Helper\u003Cint>>\n",[936,2076,2077,2089,2098,2115,2119,2124,2152,2162,2169,2185,2189],{"__ignoreMap":934},[939,2078,2079,2081,2083,2085,2087],{"class":941,"line":942},[939,2080,1848],{"class":963},[939,2082,1851],{"class":949},[939,2084,1987],{"class":963},[939,2086,1990],{"class":993},[939,2088,957],{"class":949},[939,2090,2091,2093,2096],{"class":941,"line":960},[939,2092,2009],{"class":963},[939,2094,2095],{"class":993}," Helper",[939,2097,987],{"class":949},[939,2099,2100,2103,2106,2108,2110,2113],{"class":941,"line":990},[939,2101,2102],{"class":993},"    T",[939,2104,2105],{"class":967}," help",[939,2107,1050],{"class":949},[939,2109,1405],{"class":949},[939,2111,2112],{"class":1188}," \u002F* [...] *\u002F",[939,2114,1526],{"class":949},[939,2116,2117],{"class":941,"line":1035},[939,2118,1619],{"class":949},[939,2120,2121],{"class":941,"line":1041},[939,2122,2123],{"class":1188},"\u002F\u002F 依赖于 T 的类型“表达式”作为 U 的默认模板实参\n",[939,2125,2126,2128,2130,2132,2134,2136,2138,2140,2142,2144,2146,2149],{"class":941,"line":1055},[939,2127,1848],{"class":963},[939,2129,1851],{"class":949},[939,2131,1987],{"class":963},[939,2133,1990],{"class":993},[939,2135,1388],{"class":949},[939,2137,1995],{"class":963},[939,2139,1998],{"class":993},[939,2141,1116],{"class":949},[939,2143,2095],{"class":1000},[939,2145,1851],{"class":949},[939,2147,2148],{"class":993},"T",[939,2150,2151],{"class":949},">>\n",[939,2153,2154,2156,2158,2160],{"class":941,"line":1073},[939,2155,2148],{"class":993},[939,2157,1378],{"class":967},[939,2159,1050],{"class":949},[939,2161,987],{"class":949},[939,2163,2164,2167],{"class":941,"line":1089},[939,2165,2166],{"class":1000},"    U helper",[939,2168,1032],{"class":949},[939,2170,2171,2173,2176,2179,2182],{"class":941,"line":1714},[939,2172,1889],{"class":945},[939,2174,2175],{"class":1000}," helper",[939,2177,2178],{"class":949},".",[939,2180,2181],{"class":967},"help",[939,2183,2184],{"class":949},"();\n",[939,2186,2187],{"class":941,"line":1723},[939,2188,1038],{"class":949},[939,2190,2192],{"class":941,"line":2191},11,[939,2193,2194],{"class":1188},"\u002F\u002F 例：f\u003Cint>(); 实例化 f\u003Cint, Helper\u003Cint>>\n",[918,2196,2197],{},"当可以进行模板实参推导时，若某个模板形参没有推导出其值但提供了默认模板实参，则推导成功并采用默认模板实参。这个过程对于类模板、函数模板、非类型模板参数或类型模板参数都适用。",[929,2199,2201],{"className":931,"code":2200,"language":933,"meta":934,"style":934},"template\u003Ctypename T, typename U = int>\nU cast(T a) {\n    return static_cast\u003CU>(a);\n}\nint main() {\n    cast(3.14); \u002F\u002F 推导出 T = double，无法从函数实参推导 U\n                \u002F\u002F 但 U 提供了默认参数 int，从而 U = int\n                \u002F\u002F 得到返回值类型为 int\n}\n",[936,2202,2203,2225,2243,2260,2264,2274,2289,2294,2299],{"__ignoreMap":934},[939,2204,2205,2207,2209,2211,2213,2215,2217,2219,2221,2223],{"class":941,"line":942},[939,2206,1848],{"class":963},[939,2208,1851],{"class":949},[939,2210,1987],{"class":963},[939,2212,1990],{"class":993},[939,2214,1388],{"class":949},[939,2216,1995],{"class":963},[939,2218,1998],{"class":993},[939,2220,1116],{"class":949},[939,2222,1391],{"class":1000},[939,2224,957],{"class":949},[939,2226,2227,2230,2233,2235,2237,2239,2241],{"class":941,"line":960},[939,2228,2229],{"class":993},"U",[939,2231,2232],{"class":967}," cast",[939,2234,971],{"class":949},[939,2236,2148],{"class":993},[939,2238,1385],{"class":980},[939,2240,984],{"class":949},[939,2242,987],{"class":949},[939,2244,2245,2247,2250,2252,2255,2258],{"class":941,"line":990},[939,2246,1889],{"class":945},[939,2248,2249],{"class":949}," static_cast\u003C",[939,2251,2229],{"class":1000},[939,2253,2254],{"class":949},">(",[939,2256,2257],{"class":1000},"a",[939,2259,1070],{"class":949},[939,2261,2262],{"class":941,"line":1035},[939,2263,1038],{"class":949},[939,2265,2266,2268,2270,2272],{"class":941,"line":1041},[939,2267,1044],{"class":963},[939,2269,1047],{"class":967},[939,2271,1050],{"class":949},[939,2273,987],{"class":949},[939,2275,2276,2279,2281,2284,2286],{"class":941,"line":1055},[939,2277,2278],{"class":967},"    cast",[939,2280,971],{"class":949},[939,2282,2283],{"class":1399},"3.14",[939,2285,1204],{"class":949},[939,2287,2288],{"class":1188}," \u002F\u002F 推导出 T = double，无法从函数实参推导 U\n",[939,2290,2291],{"class":941,"line":1073},[939,2292,2293],{"class":1188},"                \u002F\u002F 但 U 提供了默认参数 int，从而 U = int\n",[939,2295,2296],{"class":941,"line":1089},[939,2297,2298],{"class":1188},"                \u002F\u002F 得到返回值类型为 int\n",[939,2300,2301],{"class":941,"line":1714},[939,2302,1038],{"class":949},[918,2304,2305],{},"提供默认模板实参的模板形参可以省略其名字。与函数默认实参不同，这种写法是有一定用处的，我将在比较靠后的篇幅提到。",[929,2307,2309],{"className":931,"code":2308,"language":933,"meta":934,"style":934},"template\u003Ctypename T, typename = void> \u002F\u002F 省略第二个模板形参名\nvoid f() { }\n",[936,2310,2311,2335],{"__ignoreMap":934},[939,2312,2313,2315,2317,2319,2321,2323,2325,2327,2330,2332],{"class":941,"line":942},[939,2314,1848],{"class":963},[939,2316,1851],{"class":949},[939,2318,1987],{"class":963},[939,2320,1990],{"class":993},[939,2322,1388],{"class":949},[939,2324,1995],{"class":963},[939,2326,1116],{"class":949},[939,2328,2329],{"class":1000}," void",[939,2331,2056],{"class":949},[939,2333,2334],{"class":1188}," \u002F\u002F 省略第二个模板形参名\n",[939,2336,2337,2339,2341,2343,2345],{"class":941,"line":960},[939,2338,964],{"class":963},[939,2340,1378],{"class":967},[939,2342,1050],{"class":949},[939,2344,1405],{"class":949},[939,2346,1526],{"class":949},[2348,2349,2350],"style",{},"html pre.shiki code .s7zQu, html code.shiki .s7zQu{--shiki-light:#39ADB5;--shiki-light-font-style:italic;--shiki-default:#89DDFF;--shiki-default-font-style:italic;--shiki-dark:#89DDFF;--shiki-dark-font-style:italic}html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}html pre.shiki code .sHdIc, html code.shiki .sHdIc{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#EEFFFF;--shiki-default-font-style:italic;--shiki-dark:#BABED8;--shiki-dark-font-style:italic}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sHwdD, html code.shiki .sHwdD{--shiki-light:#90A4AE;--shiki-light-font-style:italic;--shiki-default:#546E7A;--shiki-default-font-style:italic;--shiki-dark:#676E95;--shiki-dark-font-style:italic}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}",{"title":934,"searchDepth":942,"depth":960,"links":2352},[2353,2354],{"id":924,"depth":960,"text":924},{"id":1832,"depth":960,"text":1832},"md",null,{},{"icon":585},{"title":596,"description":920},"ztNmCByw162QOGVCAd7DBjSDHpk915PQXvaZIrKs-Tk",[2362,2363],{"title":592,"path":593,"stem":594,"description":592,"icon":585,"children":-1},{"title":600,"path":601,"stem":602,"description":2364,"icon":585,"children":-1},"函数模板是提供生成函数能力的语法。换而言之，函数模板提供了一簇函数供编译器选择。",1784618104950]