is_convertible Class

Tests if one type is convertible to another.

template<class From, class To>
    struct is_convertible;

Parameters

• From
  The type to convert from.

• Ty
  The type to convert to.

Remarks

An instance of the type predicate holds true if the expression To to = from;, where from is an object of type From, is well-formed.

Example

// std_tr1__type_traits__is_convertible.cpp 
// compile with: /EHsc 
#include <type_traits> 
#include <iostream> 
 
struct trivial 
    { 
    int val; 
    }; 
 
int main() 
    { 
    std::cout << "is_convertible<trivial, int> == " << std::boolalpha 
        << std::is_convertible<trivial, int>::value << std::endl; 
    std::cout << "is_convertible<trivial, trivial> == " << std::boolalpha 
        << std::is_convertible<trivial, trivial>::value << std::endl; 
    std::cout << "is_convertible<char, int> == " << std::boolalpha 
        << std::is_convertible<char, int>::value << std::endl; 
 
    return (0); 
    } 
 

is_convertible<trivial, int> == false
is_convertible<trivial, trivial> == true
is_convertible<char, int> == true

Requirements

Header: <type_traits>

Namespace: std

See Also

Reference

<type_traits>

is_base_of Class

Other Resources

<type_traits> Members