concepts.hpp

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#pragma once
 
#include <concepts>
 
namespace Nui
{
    template <typename T>
    concept Numerical = std::integral<T> || std::floating_point<T>;
 
    template <typename T>
    concept Fundamental = Numerical<T> || std::same_as<T, bool>;
 
    template <typename T>
    concept Incrementable = requires(T t) {
        ++t;
        t++;
    };
 
    template <typename T>
    concept Decrementable = requires(T t) {
        --t;
        t--;
    };
 
    template <typename T, typename U>
    concept PlusAssignable = requires(T t, U u) { t += u; };
 
    template <typename T, typename U>
    concept MinusAssignable = requires(T t, U u) { t += u; };
 
    template <typename T, typename U>
    concept InvocableReturns = requires(T func) {
        {
            func()
        } -> std::same_as<U>;
    };
 
    template <typename T>
    concept Range = requires(T t) {
        t.begin();
        t.end();
        t.cbegin();
        t.cend();
    };
}