On 04/03/2012 06:55 PM, timothy adigun wrote:
Hi Stan,
Please check my comments below:
On Tue, Apr 3, 2012 at 10:39 PM, Stan N/A<stan...@gmail.com> wrote:
I've run into a weird issue where the ternary operator isn't doing
what I believe it normally would and need some help understanding the
issue. I'm sure I'm missing some critical point, but perhaps this is
an issue with perl. Here's a short 14 line script exemplifying the
issue:
-----code-----
#!/usr/bin/perl
use strict;
use warnings;
my %test = (
one => "first",
two => "second"
);
$test{one} eq "first" ?
$test{one} .= " is the worst\n" :
$test{two} .= " is the best\n";
$test{one} eq "first" ?
$test{one} .= " is the worst\n" :
( $test{two} .= " is the best\n");
that is the wrong way to fix this even if it works.
the ternary operator is meant to return a single value from a choice of
two expressions. it is not meant for side effects like assignment or sub
calls that do things. use if/else for that. the correct answer here is
to use if/else as the assignments go to different places.
if( $test{one} eq 'first' ) {
$test{one} .= " is the worst\n" ;
else {
$test{two} .= " is the best\n";
}
that code is not a good use of ?: at all so use if/else.
uri
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