PERL CGI Beginners - RE: valid use of while expression

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RE: valid use of while expression

Charles K. Clarkson

2005-03-31, 3:56 am

T Raymond <mailto:trlist@insightbb.com> wrote:

: If there is a word in $words[$n], is the following expression for
: while valid? --Teresa

Define "valid".

We can test the _syntax_: I get "a.pl syntax OK".

#!/usr/bin/perl -c
use strict;
use warnings;

my @words = split ' ', 'The quick brown fox';

my @letters;
my $n = 1;
while ( $words[$n] ) {
@letters=split//;
}

__END__

Do you want to know if the while loop is endless? Yes it is.
$words[$n] will always evaluate true until we do something to it
to make it evaluate to not true.

But these are things you could have tried yourself. So what
do you mean by "valid"?

HTH,

Charles K. Clarkson
--
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