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Postings from September 2002
Re: Regex query
From: Andrew Rodland
September 23, 2002 02:32
Re: Regex query
Message ID: firstname.lastname@example.org
On Sat, 21 Sep 2002 16:33:31 -0600 (MDT), Luke Palmer said:
> You know, the idea that square brackets are the only things that can
> make lists is starting to really appeal to me. Similar for squiggles
> and hashes. I don't know how many times in my early Perl5 days I did
> Since we now have an explicit flattening operator (unary *), there's
> no need to differentiate between a "real" list and a reference to one.
> could extend it to sub calls:
> print["foo ", "bar"];
> But that would look like Mathematica, which would be creepy. It would
> be good to keep parens in sub calls (and declarations), but the
> details on how that unifies are wrinkly. Of course, they were never
> ironed anyway:
> print "foo ", "bar";
> So parens really do provide grouping, not list constructing. Thus,
> this can stay:
> print("foo ", "bar");
> It also provides a really nice visual clue: If and only if you see
> , there's a list creeping around. Before, the "and only if" could
> not be included.
> Sure, it's not clean yet, but I presume it could be. Objections?
> Suggestions? Obsessions?
I really really like this. The list/precedence ambiguity can sometimes
cause some really nasty confusion... and there's something to be said
for matching the array-construction symbol with the array-lookup one,
and hash-construction with hash-lookup as well.