62 lines
1.2 KiB
C++
62 lines
1.2 KiB
C++
/*
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* Copyright 2015 - 2025 gary@drinkingtea.net
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include "def.hpp"
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#include "error.hpp"
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OX_CLANG_NOWARN_BEGIN(-Wunsafe-buffer-usage)
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namespace ox {
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template<typename It, typename T>
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constexpr ox::Result<size_t> findIdx(It begin, It end, T const&value) {
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auto it = begin;
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for (; it != end; ++it) {
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if (*it == value) {
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return it.offset();
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}
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}
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return ox::Error{1, "item not found"};
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}
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template<typename It, typename T>
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constexpr It find(It begin, It end, T const&value) {
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for (; begin != end; ++begin) {
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if (*begin == value) {
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return begin;
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}
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}
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return end;
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}
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template<typename It>
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constexpr It find_if(It begin, It end, auto predicate) {
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for (; begin != end; ++begin) {
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if (predicate(*begin)) {
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return begin;
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}
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}
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return end;
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}
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template<typename It, typename Size, typename OutIt>
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constexpr OutIt copy_n(It in, Size cnt, OutIt out) {
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for (Size i = 0; i < cnt; ++i) {
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*out = *in;
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++out;
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++in;
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}
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return out;
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}
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}
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OX_CLANG_NOWARN_END
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