58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/**
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* @file mix_cc/algorithm/is_found.h
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* @brief 在容器中是否可以找到对应的元素/迭代器
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* @author Cat (null.null.null@qq.com)
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* @version 0.1
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* @date 2021-05-07
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*
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* Copyright: Baosight Co. Ltd.
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* DO NOT COPY/USE WITHOUT PERMISSION
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*
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*/
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#pragma once
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#include <utility>
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#include <typeindex>
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#include <algorithm>
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namespace mix_cc {
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/**
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* @brief 普通的元素查询，如果元素在容器中，返回true，否则返回false
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* @tparam Container
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* @tparam T
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* @param container 容器
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* @param element 元素
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* @return std::enable_if_t<!std::is_same<typename Container::iterator, T>::value, bool>
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*/
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template <typename Container, typename T>
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std::enable_if_t<!std::is_same<typename Container::iterator, T>::value, bool>
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is_found(const Container &container, const T &element) {
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bool ret = true;
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// equals end, means there is NO element in container
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if (container.find(element) == container.end()) {
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ret = false; // we can't find
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}
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return ret;
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}
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/**
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* @brief 迭代器查询，如果迭代器在容器中，返回true，否则返回false
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* @tparam Container
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* @tparam I
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* @param container 容器
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* @param iter 迭代器
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* @return std::enable_if_t<std::is_same<typename Container::iterator, I>::value, bool>
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*/
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template <typename Container, typename I>
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std::enable_if_t<std::is_same<typename Container::iterator, I>::value, bool>
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is_found(const Container &container, const I &iter) {
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bool ret = true;
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// equals end, means there is NO element in container
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if (iter == container.end()) {
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ret = false; // we can't find
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}
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return ret;
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}
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} // namespace mix_cc
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