Utility

A recreation of the modern features of the <utility> header, not counting move semantics functions or tuple support. A small collection of useful functions.

Functions

exchange	Replaces the argument with a new value, then returns the old value
as_const	Obtains a const reference to its argument
declval	Obtains a reference to its argument for use in an unevaluated context
cmp_equal cmp_not_equal cmp_less cmp_less_equal cmp_greater cmp_greater_equal	Comparison functions for integer types without type conversion
in_range	Checks if a given integer value is in range of a given integer type.

Sample Code

int main(){
    int x = -5;
    unsigned int y = 5;

    Print(x > y);                 //Prints true due to promoting -5 to an unsigned type.
    Print(dp::comp_greater(x,y)); //Prints false
    Print(dp::in_range<unsigned int>(x)); //Prints false. -5 is not in range of an unsigned int.
}