bind1st (STL/CLR)

生成参数和仿函数 的 binder1st。

template<typename Fun,
    typename Arg>
    binder1st<Fun> bind1st(Fun% functor,
        Arg left);

Template Parameters

• Arg
  参数类型。

• Fun
  函数对象的类型。

函数参数

• functor
  包装的 functor。

• left
  要包装的第一个参数。

备注

模板函数返回 binder1st (STL/CLR)<Fun>(functor, left)。 使用它作为一种简便方法包装两参数的仿函数及在一个一参数的仿函数的第一个参数调用它的第二个参数。

示例

// cliext_bind1st.cpp 
// compile with: /clr 
#include <cliext/algorithm> 
#include <cliext/functional> 
#include <cliext/vector> 
 
typedef cliext::vector<int> Myvector; 
int main() 
    { 
    Myvector c1; 
    c1.push_back(4); 
    c1.push_back(3); 
    Myvector c3(2, 0); 
 
// display initial contents " 4 3" 
    for each (int elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
 
// transform and display 
    cliext::minus<int> sub_op; 
    cliext::binder1st<cliext::minus<int> > subfrom3(sub_op, 3); 
 
    cliext::transform(c1.begin(), c1.begin() + 2, c3.begin(), 
        subfrom3); 
    for each (int elem in c3) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
 
// transform and display with function 
    cliext::transform(c1.begin(), c1.begin() + 2, c3.begin(), 
        bind1st(sub_op, 3)); 
    for each (int elem in c3) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    } 
 

要求

头文件: <cliext/functional>

Namespace: cliext

请参见

参考

binder1st (STL/CLR)