std::type_info::before
std::type_info::before
bool before( const type_info& rhs ) const; |
Returns true if the type of this type_info precedes the type of rhs in the implementation's collation order. No guarantees are given; in particular, the collation order can change between the invocations of the same program.
Parameters
| rhs | - | another type information object to compare to |
Return value
true if the type of this type_info precedes the type of rhs in the implementation's collation order.
Example
#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
| checks whether the objects refer to the same type (public member function) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/cpp/types/type_info/before
