in reply to Dynamic operators

please do NOT use $a and $b since this variables are reserved for use with sort. you can use the eval call: 
use strict;

my $n1= 10;
my $n2= 20;
my $operator= "==";

my $expr = "$n1 $operator $n2";
my $erg = eval $expr;
die if ($@);

if ($erg) {
    print "true\n";
} else {
    print "false\n";
}

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Re: Re: Dynamic operators
by demerphq (Chancellor) on Sep 11, 2002 at 11:41 UTC
    While you have a valid point, the variables are not "reserved", they are simply used. Avoiding them is a good way to avoid really hard to track down errors, but if sort() is not used then they are fine.

    --- demerphq
    my friends call me, usually because I'm late....

[reply]
      they are not just simply used since strict.pm for example does not "check" them. another point is that any programmer shots himself/herself in the foot when using such imaginable variable names - except sort of course. variable names with a length less than, say, 4 should generally be disallowed. but that is only my opinion. ;)
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