Re: [Boost-users] Boost: Regular Expression question/bug?

From: Derrick Schommer (schommer_at_[hidden])
Date: 2007-02-15 20:23:00

Okay, thanks, that makes a bit more sense!

Derrick

2007/2/15, Chris Uzdavinis <cuzdav_at_[hidden]>:
> On 2/15/07, Derrick Schommer <schommer_at_[hidden]> wrote:
> > I'll give that a try, thanks. Just cannot see why is it that .{1,3}
> > doesn't have the same effect given the only difference is the
> > exclusion of a 'b'.
>
> I'm getting the impression that you have a wrong impression of regular
> expressions.  When you say .[^b]  the [^b] is not modifying the .
> expression.  What you have are two regular expressions next to each
> other, first the dot (for one character), then [^b], which matches
> anything except b.  So .[^b]  matches 2 characters,  "any-character
> followed by any-character-except-b".  Now when you put the
> repeatitions on it, ".[^b]{1,3}" you have "any-character followed by
> one-to -three-characters-that-aren't-b"
>
> Hope that helps.
> Chris
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