negate (STL/CLR)

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The latest version of this topic can be found at negate (STL/CLR).

The template class describes a functor that, when called, returns its argument negated. You use it specify a function object in terms of its argument type.

Syntax

template<typename Arg>  
    ref class negate  
    { // wrap operator()  
public:  
    typedef Arg argument_type;  
    typedef bool result_type;  
    typedef Microsoft::VisualC::StlClr::UnaryDelegate<  
        argument_type, result_type>  
        delegate_type;  
  
    negate();  
    negate(negate<Arg>% right);  
  
    result_type operator()(argument_type left);  
    operator delegate_type^();  
    };  

Parameters

Arg
The type of the arguments.

Member Functions

Remarks

The template class describes a one-argument functor. It defines the member operator operator() so that, when the object is called as a function, it returns its argument negated.

You can also pass the object as a function argument whose type is delegate_type^ and it will be converted appropriately.

Example

// cliext_negate.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::transform(c1.begin(), c1.begin() + 2,   
        c3.begin(), cliext::negate<int>());   
    for each (int elem in c3)   
        System::Console::Write(" {0}", elem);   
    System::Console::WriteLine();   
    return (0);   
    }  
  

4 -3  
-4 3  

Requirements

Header: <cliext/functional>

Namespace: cliext

See Also

logical_not (STL/CLR)