如何使用boost截断给定表达式的字符串

I need to truncate a string after an underscore. Example:-

我需要在下划线后截断一个字符串。例：-

std::wstring name = L"Steve_Smith";
trim_right_if(name, is_any_of(L"_"));

The trim_right_if is not working, the name remains the same after its execution. Is there a way using boost::regex ?

trim_right_if不起作用，名称在执行后保持不变。有没有办法使用boost :: regex？

Yes, i am trying not to use find_first_of and substr, which i know works.

是的，我试图不使用find_first_of和substr，我知道它可行。

1 个解决方案

#1

trim_right_if() is only if it's in the end of the string.
"Steve_Smith___" ==> "Steve_Smite"

trim_right_if（）仅在它位于字符串末尾时才有效。 “Steve_Smith___”==>“Steve_Smite”

what you want to do is replace_all(name, L"_", L"");

你想要做的是replace_all（name，L“_”，L“”）;