std::type_info::before - cppreference.com

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# std::type_info::before

From cppreference.com
< cpp‎ | types‎ | type info

bool before( const type_info& rhs ); |  |

Returns true if the referred type precedes type, referred to by `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.

### [edit] Parameters

rhs | - | another type information object to compare to

### [edit] Return value

true if the referred type precedes type, referred to by rhs in the implementation's collation order.

### [edit] 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.

### [edit] See also

operator==operator!= | checks whether the objects refer to the same type (public member function) [edit]

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