本文介绍了在不区分大小写的字符串向量中查找字符串 C++的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
I have
std::vector<std::string> vec;
std::string myString;
and I need to find out if myString is in vec using case insensitive comaprisons.
I know I can use
find(vec.begin(), vec.end(), myString) != vec.end())
to answer the question "is myString in vec?" but that will do case sensitive comparisons. I need case insensitive comparisons.
The position is not important, I just want to know if myString is in vec or not.
解决方案
Or, for a much smaller and easier-to-read solution, Boost!
// #include <algorithm>
// #include <boost/algorithm/string/predicate.hpp>
const auto it = std::find_if(
std::begin(vec),
std::end(vec),
[&myString](const auto& str) { return boost::iequals(myString, str); }
);
const bool found = (it != std::end(vec));
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