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Re: Multiple check in If statement ??

by neniro (Priest)
on Jul 11, 2005 at 07:06 UTC ( #473852=note: print w/ replies, xml ) Need Help??


in reply to Multiple check in If statement ??

Hmm, you could concat all of them, so you just need to compare two strings and thats easy.

As Thilosophy wrote, thats a bad idea so please ignore it.


Comment on Re: Multiple check in If statement ??
Re^2: Multiple check in If statement ??
by Thilosophy (Curate) on Jul 11, 2005 at 07:52 UTC
    Hmm, you could concat all of them, so you just need to compare two strings and thats easy.

    That could also give a lot of false positives...

    $a = "abcd"; $e = "e";
      Yeah, you're right. Another try:
      #!/usr/bin/perl use strict; use warnings; my $a = "a"; my $b = "b"; my $c = "c"; my $d = "d"; my $e = "e"; if ( eq_list ([$a, $b, $c, $d, $e], [qw(a b c d e)]) ) { print "success\n"; } else { print "failure\n"; } sub eq_list { my ($arr1, $arr2) = @_; my @compared = map { $arr1->[$_] eq $arr2->[$_] ? 1 : 0 } (0..$#$a +rr1); my $bool = 1; $bool *= $_ for (@compared); return $bool; }
Re^2: Multiple check in If statement ??
by Enlil (Parson) on Jul 11, 2005 at 08:00 UTC
    This will not always work correctly without knowing a little more about the data.

    For example in your code, it will print success if $d='de' and $e = '' even though it should print false according to the OP's original intent. Depending on what you know about the data, that will be in those variables however, you could probably do what you are intending, but joining both sides with a common delimiter and then comparing them. For example:

    if ( join("->",$a,$b,$c,$d,$e) eq join '->',qw(a c c d e)) { print "success\n"; } else { print "failure\n"; }

    -enlil

      I hate to say it, but sometimes I type much faster than I think. Joining it using a delimiter is a much better idea than mine. I've added another code below thilosophies post that should be okay.

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