std::type_info::before

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< cpp‎ | types‎ | type info
C++
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Type support
std::type_info
bool before( const type_info& rhs ) const ;
(noexcept since C++11)

Returns true if the type of this type_info precedes the type of rhs

Parameters

rhs - another type information object to compare to

Return value

true if the type of this type_info precedes the type of rhs

Example

Run this code
#include <iostream>
#include <typeinfo>
 
int main()
{
    if (typeid(int).before(typeid(char)))
        std::cout << "int goes before char in this implementation.\n";
    else
        std::cout << "char goes before int in this implementation.\n";
}

Possible output: 

char goes before int in this implementation.

See also

(removed in C++20)
 checks whether the objects refer to the same type
(public member function)
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