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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                [TOC] # 類中的數據類型參數化 類模板就是把類中的數據類型參數化 ~~~ template<class NameType, class AgeType> class Maker { public: Maker(NameType name, AgeType age) { this->name = name; this->age = age; } void printMaker() { cout << "name: " << this->name << " age: " << this->age << endl; } public: NameType name; AgeType age; }; void test02() { //類模板這邊要加上<>這個 //類模板不會自動推導數據類型,要顯示的告訴編譯器是什么類型,函數模板會推導 //注意傳入的類型,需要自己把握 Maker<string, int> m("悟空", 18); m.printMaker(); } ~~~ # 默認參數類型 ~~~ //從默認類型的泛型開始,后面的如果要定義都必須要有默認類型 template<class NameType, class AgeType=int> class Maker { public: Maker(NameType name, AgeType age) { this->name = name; this->age = age; } void printMaker() { cout << "name: " << this->name << " age: " << this->age << endl; } public: NameType name; AgeType age; }; void test02() { //如果有默認類型,這邊可以少寫一個 Maker<string> m("悟空", 18); m.printMaker(); //以傳入的類型為準 Maker<string, double> m2("x", 17.7); m2.printMaker(); } ~~~
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