begin  quoting Lan Barnes as of Wed, Apr 18, 2007 at 10:06:48AM -0700:
> On Tue, April 17, 2007 10:42 pm, Ralph Shumaker wrote:
> > :-)   Pehaps, but I haven't used regex much anywhere besides vim.
> 
> No perl? A shame. Everybody loves perl ... it's fun ;-)

Yeah, but I need to reach for a book before I do too much in perl.

> > If I get to a point where I would use it a *lot*, then I may look
> > into that.
> 
> I think of regexs as incredibly compact code. If you can write a good
> regex, especially in current scripting languages, you can do a lot of work
> in one or two lines of code. Did anyone mention that there is a learning
> curve ...? ;-)

Regular expressions are a compact (most of the time) expression of a
"regular language" -- and thus isomorphic to deterministic finite automata.

It's an interesting exercise to take a small regex and transform it into
the corresponding DFA and into the corresponding grammar.

-- 
Well, maybe it's only interesting to me.
Stewart Stremler


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