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From: cameron@usage.csd.oz (Cameron Simpson,foo)
Newsgroups: comp.lang.perl
Subject: Re: unpack and endianness
Message-ID: <887@usage.csd.unsw.oz.au>
Date: 7 Oct 90 06:24:49 GMT
References: <9847@jpl-devvax.JPL.NASA.GOV>
Sender: news@usage.csd.unsw.oz.au
Reply-To: cameron@spectrum.cs.unsw.oz.au (Cameron Simpson)
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From article <9847@jpl-devvax.JPL.NASA.GOV>, by lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall):
| In article <885@usage.csd.unsw.oz.au> cameron@spectrum.cs.unsw.oz.au (Cameron Simpson) writes:
| : From article <9821@jpl-devvax.JPL.NASA.GOV>, by lwall@jpl-devvax.JPL.NASA.GOV (Larry Wall):
| : | 	    $_[0] =~ s/([\0-\377])([\0-\377])/$2$1/g;
| : 
| : Um, why can't I write
| :  	    $_[0] =~ s/(.)(.)/$2$1/g;
| 
| Because . doesn't match \n.

Goes back and Rs the FM more closely. Oh the embarrassment.

| [\0-\377] is the most efficient way to match
| everything currently.  Maybe \e should match everything.

Nah. What's wrong with [^]?

| And \E would of course match nothing.   :-)

Correspondingly, []. Haven't tried it yet (does so). Ouch. The ] at the
start of the pattern is taken as part of the range. A feature. Well, it
was a nice idea...
	- Cameron Simpson
	  cameron@spectrum.cs.unsw.oz.au
	  "To every problem there is a simple, obvious, wrong solution."