c++ - 正则表达式匹配

Question

我有一个功能可以检查输入的行是否“OK”。

#include <tr1/regex>

bool lineIsValid(string line) {
    const tr1::regex pattern("[^-]{1,30} - [^-]{1,30}");
    return tr1::regex_match(line, pattern);
}

lineIsValid("test - test");

函数返回假。为什么？

Answer 1

也许语法没问题，但取决于实现。检查这个post .

或this :

After further investigation, I (we) have determined that the TR1 framework supplied by Microsoft with Visual Studio 2008 [and some very early versions of Visual Studio 2010] is buggy, which makes me wonder why the other regex's supplied by Dinkumware are not buggy. Or are they?