Re: [Boost-users] [Regex] Subexpression matching during search

Subject: Re: [Boost-users] [Regex] Subexpression matching during search
From: Larry (lknain_at_[hidden])
Date: 2014-01-03 12:36:24

"If the regex string is embedded in the C++ source then those backslashes
will need to be doubled to \\d."

Thanks John.

The regex strings are read from file. For the example 
"^(XXX_\d{3,3})_\d{3,3}$"  actually
exists as ^(XXX_###)_###$ in the file and is converted programmatically to 
example string. The
only ones that seem to fail are ones that begin with "^(.....".  In strings 
like "^...(..." there
doesn't seem to be a problem.  The strings run against the regex are read 
from a database.
Again, the odd thing is if I remove the parenthesis [^XXX_###_###$] it works 
and the correct
strings are found.

I'll do a bit of experimenting with it and will post a condensed test 
program if I can't pin it
down.

Larry

-----Original Message----- 
From: John Maddock
Sent: Friday, January 03, 2014 4:09 AM
To: boost-users_at_[hidden]
Subject: Re: [Boost-users] [Regex] Subexpression matching during search

>I have probably missed something in the doc that answers my query but I 
>just can’t see it.

If the regex string is embedded in the C++ source then those backslashes
will need to be doubled to \\d.

Other than that I don't see anything wrong, can you please post a complete
self-contained text case so we can see where you're going wrong?

John.

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