template <typename Type> class Bar {friend Type;}其中 Type 可以是内置的类型。Template Type Aliases我们可以使用 using 语法来创建 template 别名。template <typename T> using twin = pair<T, T>twin<string> authors;template <typename
25 std::cout << Gadd(1, 2, 3) << std::endl; 26 //使用using别名来实现这么个功能 27 system("echo 使用using实现1~4累加"); 28 using Func = int(*) (int, int, int, int); 29 Func func = calc; 30 std::cout << func(1, 2, 3, 4) << std::endl; 31 std::cin.get(); ...
AI代码解释 #include<vector>using std::vector;template<classObject,intPREMEM>classDataPool{public:DataPool();~DataPool();vector<Object>&GetVec();voidAddData(Objectin);intGetSize();voidClear();private:vector<Object>_vec;};// ---template<classObject,intPREMEM>DataPool<Object,PREMEM>::DataP...
template<typename T> class C { using Type = T; struct J { C* c; // C refers to a current instantiation C<Type>* c2; // C<Type> refers to a current instantiation I* i; // I refers to an unknown specialization, // because I does not enclose J J* j; // J refers to a c...
using namespace std; // sizeof...() 是 C++11 引入的参数包的操作函数,用来取参数的数量 template int length(Args ... args) { return sizeof...(Args); } int main(int argc, char* argv[]) { // 以下语句将在屏幕打印出:2 cout << length(1, "hello") << endl; // 以下语句将在屏幕...
// (c) Zhanyong Wan// 3/17/2004#include <iostream>// The generic definition for the Array template class.template <typename T>class Array{private:T * elements;int size;public:Array( int aSize ): size( aSize ){// size validity checking code omitted......
#include<iostream>#include<cstring>using namespace std;template<typenameT1,typenameT2>boolCompare(constT1&t1,constT2&t2){cout<<"call Compare(const T1& t1,const T2& t2)"<<endl;if(t1>t2){returntrue;}returnfalse;}boolCompare(constchar*s1,constchar*s2){cout<<"call Compare(const char* s1,...
using namespace std; //模板函数 template<typename T1,typename T2> void fun(T1 a,T2 b){ cout<<"模板函数"<<endl; } //全特化 template<> void fun(int a,char b){ cout<<"全特化"<<endl; } //函数不存在偏特化,以下代码是错误的 ...
using namespace std;template <typename T> class A { public: T add(T a,T b); A(); };template <typename T> A<T>::A() { }template <typename T> T A<T>::add(T a,T b) { return a+b; }int main() { A<int> a;
using namespace std; template <typename T> class A { public: T add(T a,T b); A(); }; template <typename T> A<T>::A() { } template <typename T> T A<T>::add(T a,T b) { return a+b; } int main() { A<int> a; ...