Usage of regex in c++11

Question

I'm using VS2010.

I have problem with regular expression

What regular expression should I use to search in string

std::string foo("s:{foo} s1:{bar}");

words foo, bar and possibly know they position.

I thought that something like

std::regex r("\\{.*\\}");

should work. But it doesn't. Why?

Answer 1

for string s:{foo} s1:{bar}

{.*} would match {foo} s1:{bar}

.* matches greedily that is it would match till the last } in your case

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{.*?} would match {foo} and in the next match it would match {bar}

.*? matches lazily that is it would match till the first } in your case