flip

Header

#include <fit/flip.hpp>

Description

The flip function adaptor swaps the first two parameters.

Synopsis

template<class F>
flip_adaptor<F> flip(F f);

Semantics

assert(flip(f)(x, y, xs...) == f(y, x, xs...));

Requirements

F must be:

• BinaryCallable
• MoveConstructible

Example

#include <fit.hpp>
#include <cassert>

int main() {
    int r = fit::flip(fit::_ - fit::_)(2, 5);
    assert(r == 3);
}