variable treatment

asthaonard has asked for the wisdom of the Perl Monks concerning the following question:

Hello

I'm very new to perl - just starting :) And so rather theoretical question

How could i force perl to treat variable as number or text?

Very short example:

my $a = '94';
my $b = '98';
my $c = $a ^ $b;
print "$c\n";

my $x = 94;
my $y = 98;
my $z = $a ^ $b;
print "$z\n";

my $i = 94 ^ 98;
print "$i\n";
[download]

and output is:

 &#9792;
 &#9792;
60
[download]

Comment on variable treatment Select or Download Code

Replies are listed 'Best First'.
Re: variable treatment by oxone (Friar) on Jun 08, 2011 at 05:59 UTC
Good question! See Bitwise String Operators, which says "You may explicitly show which type of operation you intend by using "" or 0+". So this: `use strict; use warnings; my $a = '94'; my $b = '98'; my $c = 0+$a ^ 0+$b; print "$c\n"; my $x = 94; my $y = 98; my $z = 0+$a ^ 0+$b; print "$z\n"; my $i = 94 ^ 98; print "$i\n";` [download] Gives: `60 60 60` [download]	[reply] [d/l] [select]
Re^2: variable treatment by asthaonard (Acolyte) on Jun 08, 2011 at 07:21 UTC
Thank you. I hadn't thought it's so easy.	[reply]
Re: variable treatment by choroba (Cardinal) on Jun 08, 2011 at 07:48 UTC
On line 7, you probably meant `$z = $x ^ $y`.	[reply] [d/l]