[Boost-users] boost::xpressive use of before(...)

17 Apr 2019

      Good morning,

In our project I have the enviable task of transforming a large number 
of perl regex into boost::xpressive static code in c++.

To ensure that the code I write, I have put together a simple test app 
where I create the sregex object and can then test that the result is 
that which is exected.

I am stuck with the use of before(...)

Here is my test - which fails

std::string strInput = "&9-A02FEfoo";
sregex re;

re = bos >> as_xpr("&9-A02FE") >> before("foo");
if(regex_match(strInput, sm, re))
{
     strResult = "matched : " + sm[0].str();
}

According to the documentation (v1.67) this should work.
What am I doing wrong here ?

Best regards
Simon

[Boost-users] boost::xpressive use of before(...)

Simon Giddings