[boost] Re: new version of xpressive available

From: Eric Niebler (eric_at_[hidden])
Date: 2005-05-18 17:02:21

Rob Stewart wrote:
> From: "Eric Niebler" <eric_at_[hidden]>
> 
>>Rob Stewart wrote:
> 
> Perhaps there's time to improve the proposed
> interface, too?

It's too late for TR1 but not for C++0X.

> Maybe a note clarifying that while spaces are significant in a
> Perl or, for that matter, a dynamic xpressive RE, they aren't
> significant in a static xpressive RE other than in literals.

But this is obvious, and I don't think pointing out the obvious makes 
for better documentation.

> What about "beg" and "end?"  I realize they aren't reusing the
> proposed terminology, but they avoid the "sequence/buffer/input"
> issue.

Beginning of what? End of what? The line? The word? The 
sequence/input/buffer? beg/end are not specific enough, nor are they 
more memorable than bos/eos, IMO. Besides, "end" is too common to make 
it a namespace scoped constant, and "beg" is a word of its own with a 
meaning distinct than "begin". Nope, bos/eos are it.

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com