Boost Users :
Subject: Re: [Boost-users] boost::xpressive use of before(...)
From: Gavin Lambert (boost_at_[hidden])
Date: 2019-04-18 01:42:42
On 17/04/2019 21:39, Simon Giddings wrote:
> std::string strInput = "&9-A02FEfoo";
> sregex re;
> re = bos >> as_xpr("&9-A02FE") >> before("foo");
> if(regex_match(strInput, sm, re))
> Â Â Â strResult = "matched : " + sm.str();
regex_match requires matching the entire string. "before" is a
lookahead assertion, which means it doesn't actually consume the "foo"
in the input, so the match fails.
Use regex_search instead if you want to find partial matches.
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