Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!bcm!convex!usenet
From: tchrist@convex.COM (Tom Christiansen)
Newsgroups: comp.lang.perl
Subject: Re: Do be do be do.
Message-ID: <1991Feb04.015138.28575@convex.com>
Date: 4 Feb 91 01:51:38 GMT
References: <1991Feb4.012916.7944@uvaarpa.Virginia.EDU>
Sender: usenet@convex.com (news access account)
Reply-To: tchrist@convex.COM (Tom Christiansen)
Organization: CONVEX Software Development, Richardson, TX
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From the keyboard of marc@mit.edu:
:I was under the impression that
:
:	&foo() while $bar;
:
:was just a sugar for
:
:	while ($bar) {
:		&foo();
:	}
:
:If not, what are the rules?  (Feel free to cite page numbers.  I got
:my Book :-)

It's in the section entitled ``Simple Statements'' in both the man page
and the Camel Book (see the top of page 94).  The essential text follows:

    The loop conditional is evaluation before the expression, except when
    applied to a do-BLOCK or a do_SUBROUTINE command, in which case the
    block executes once before the conditional is evaluated.

More details follow.  Check it out.

--tom
--
"Still waiting to read alt.fan.dan-bernstein using DBWM, Dan's own AI
window manager, which argues with you 10 weeks before resizing your window." 
### And now for the question of the month:  How do you spell relief?   Answer:
U=brnstnd@kramden.acf.nyu.edu; echo "/From: $U/h:j" >>~/News/KILL; expire -f $U