repeat.hpp

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#ifndef REPEAT_HPP_INCLUDED
#define REPEAT_HPP_INCLUDED
 
#include <type_traits>
 
namespace chops {
 
template <typename F>
constexpr auto repeat(int n, F&& f)
    noexcept(noexcept(f(n)))
    -> std::enable_if_t<std::is_invocable_v<F&&, int>>
{
    for(int i = 0; i < n; ++i)
    {
        f(i);
    }
}
 
template <typename F>
constexpr auto repeat(int n, F&& f)
    noexcept(noexcept(f()))
    -> std::enable_if_t<!std::is_invocable_v<F&&, int>>
{
    for(int i = 0; i < n; ++i)
    {
        f();
    }
}
 
} // end namespace
 
#endif