idxiterator.hpp

	template<typename T> class IdxIterator
	{
		private:
			T* container;
			std::size_t idx;

		public:
			inline IdxIterator(T* mContainer, std::size_t mIdx) noexcept : container{mContainer}, idx{mIdx} { }
			inline IdxIterator(const IdxIterator& mOther) noexcept = default;

			inline IdxIterator& operator=(const IdxIterator& mItr) noexcept = default;
			inline typename T::reference operator*() const noexcept { return (*container)[idx]; }
			inline IdxIterator& operator++() noexcept { ++idx; return *this; }

			inline IdxIterator& operator+=(std::size_t mStep) noexcept { idx += mStep; return *this; }
			inline IdxIterator& operator+=(const IdxIterator& mItr) noexcept { idx += mItr.idx; return *this; }

			inline IdxIterator& operator-=(std::size_t mStep) noexcept { idx -= mStep; return *this; }
			inline IdxIterator& operator-=(const IdxIterator& mItr) noexcept { idx -= mItr.idx; return *this; }

			inline bool operator<(const IdxIterator& mItr) const noexcept { return idx < mItr.idx; }
			inline bool operator>(const IdxIterator& mItr) const noexcept { return idx > mItr.idx; }
			inline bool operator<=(const IdxIterator& mItr) const noexcept { return idx <= mItr.idx; }
			inline bool operator>=(const IdxIterator& mItr) const noexcept { return idx >= mItr.idx; }
			inline bool operator==(const IdxIterator& mItr) const noexcept { return idx == mItr.idx; }
			inline bool operator!=(const IdxIterator& mItr) const noexcept { return idx != mItr.idx; }
	};

	template<typename T> inline IdxIterator<T> operator+(IdxIterator<T> mA, const IdxIterator<T>& mB) noexcept { mA.idx += mB.idx; return mA; }
	template<typename T> inline IdxIterator<T> operator-(IdxIterator<T> mA, const IdxIterator<T>& mB) noexcept { mA.idx -= mB.idx; return mA; }