no matching function transform?

Posted 合唱团abc

tags:

篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了no matching function transform?相关的知识,希望对你有一定的参考价值。

http://stackoverflow.com/questions/19876746/stdtolower-and-visual-studio-2013

http://forums.codeguru.com/showthread.php?489969-no-matching-function-transform

std::tolower is overloaded in C++, it‘s declared in <cctype> as

int tolower(int);

and also in <locale> as

template<CharT> CharT tolower(CharT, const locale&);

so when you say "std::tolower" you get an ambiguous(模糊不清的) reference to an overloaded function.

  1. Why ::tolower version is working?

When you include <cctype> the one-argument overload is declared in namespace std and mightalso be declared in the global namespace, depending on the compiler. If you include <ctype.h> then it‘s guaranteed to be included in the global namespace, and ::tolower will work (although note Dietmar‘s points about when it‘s not safe). The two-argument overload from <locale> is never declared in the global namespace, so ::tolower never refers to the two-argument overload.

2. Why std::tolower is not working in std::transform?

See above, it‘s an overloaded name.

以上是关于no matching function transform?的主要内容,如果未能解决你的问题,请参考以下文章

QT编程错误解决 error: no matching function for call to

C++ string.replace 生成“No matching function for call”错误

为啥我得到 [Error] no matching function for call to 'car::car()'

error: no matching function for call to 'std::exception:exception(const char[16])'

错误记录Visual Studio 中编译 NDK 报错 ( no matching function for call to ‘cacheflush‘ cacheflush(); )

Qt error ------ no matching function for call to QObject::connect(QSpinBox*&, <unresolved ove