unary_negate (STL/CLR)

The template class describes a functor that, when called, returns the logical NOT of its stored one-argument functor. You use it specify a function object in terms of its stored functor.

template<typename Fun>
    ref class unary_negate
    { // wrap operator()
public:
    typedef Fun stored_function_type;
    typedef typename Fun::argument_type argument_type;
    typedef bool result_type;
    typedef Microsoft::VisualC::StlClr::UnaryDelegate<
        argument_type, result_type>
        delegate_type;

    unary_negate(Fun% functor);
    unary_negate(unary_negate<Fun>% right);

    result_type operator()(argument_type left);
    operator delegate_type^();
    };

Parameters

• Fun
  The type of the stored functor.

Member Functions

Type Definition	Description
argument_type	The type of the functor argument.
delegate_type	The type of the generic delegate.
result_type	The type of the functor result.

Member	Description
unary_negate	Constructs the functor.

Operator	Description
operator()	Computes the desired function.
delegate_type^	Casts the functor to a delegate.

Remarks

The template class describes a one-argument functor that stores another one-argument functor. It defines the member operator operator() so that, when the object is called as a function, it returns the logical NOT of the stored functor called with the argument.

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

Example

// cliext_unary_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(0); 
    Myvector c3(2, 0); 
 
// display initial contents " 4 0" 
    for each (int elem in c1) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
 
// transform and display 
    cliext::logical_not<int> not_op; 
 
    cliext::transform(c1.begin(), c1.begin() + 2, c3.begin(), 
        cliext::unary_negate<cliext::logical_not<int> >(not_op)); 
    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(), 
        cliext::not1(not_op)); 
    for each (int elem in c3) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
    return (0); 
    } 
 

 4 0
 1 0
 1 0

Requirements

Header: <cliext/functional>

Namespace: cliext

See Also

Reference

not1 (STL/CLR)