头文件:
#include
模板类别:
template
struct remove_const;
句法:
std::remove_const::value
参数:此模板std :: remove_const接受单个参数T(Trait类),以检查T是否没有const限定值。
返回值:模板std :: remove_const返回一个布尔值:
- True:如果T类型没有const限定。
- False:如果T类型具有const限定符。
下面是在C++中演示std :: remove_const的程序:
程序:
// C++ program to illustrate
// std::remove_const
#include
#include
using namespace std;
// Driver Code
int main()
{
// Declare variable of type
// int, const int, const int*,
// int * const and const int&
typedef remove_const::type A;
typedef remove_const::type B;
typedef remove_const::type C;
typedef remove_const::type D;
typedef remove_const::type E;
cout << std::boolalpha;
// Checking const of the above
// declared variables
cout << "A is without const int? "
<< is_same::value
<< endl;
cout << "B is without const int? "
<< is_same::value
<< endl;
cout << "C is without const int? "
<< is_same::value
<< endl;
cout << "D is without const int? "
<< is_same::value
<< endl;
cout << "E is without const int? "
<< is_same::value
<< endl;
return 0;
}
输出:
A is without const int? true
B is without const int? true
C is without const int? false
D is without const int? false
E is without const int? false
参考: http://www.cplusplus.com/reference/type_traits/remove_const/
要从最佳影片策划和实践问题去学习,检查了C++基础课程为基础,以先进的C++和C++ STL课程基础加上STL。要完成从学习语言到DS Algo等的更多准备工作,请参阅“完整面试准备课程” 。