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Re: A Case with 5 Var's

by dorward (Curate)
on Jan 25, 2007 at 10:42 UTC ( [id://596445]=note: print w/replies, xml ) Need Help??


in reply to A Case with 5 Var's

Use a hash instead of five scalars. Then you can do:

my @found;
foreach my $field_name (qw/name vorname plz tel tel49/) {
  push(@found, $field_name) if ($my_hash{$field_name});
}

[download]

(Untested)

That will give you an array of all the fields that are set. This may or may not be helpful - you didn't say what you planned to do with the results.

Replies are listed 'Best First'.
Re^2: A Case with 5 Var's
by Fletch (Bishop) on Jan 25, 2007 at 13:36 UTC

    Or more succinctly: 

    my @found = grep exists $my_hash{ $_ }, qw( name vorname plz tel tel49
+ );

    [download]

    Update: Good point below. Omit the exists if that's the desired behavior. MENTAL NOTE: NO POSTING OR UPDATING NODES BEFORE CAFFEINE TAKES EFFECT.

[reply]
[d/l]

      The original code doesn't consider an empty string to be "found", but exists will.

[reply]

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