Re: How do I find the key of a specific hash element?

jshock schreef:
> For example:
> 
> my %weekdays = (
> 0  => "SUN",
> 1 => "MON",
> 2 => "TUE",
> 3 => "WED",
> 4 => "THU",
> 5 => "FRI",
> 6 => "SAT",
> );
> $weekdays{2}; # gives "TUE"
> 
> But what if I know "TUE" and want to find out what the key is? Is
> there a construct like $weekdays{"TUE"} that gives 2"

The data structure that you show, belongs in an array. 

perl -le'
#!/usr/bin/perl
  use strict;
  use warnings;

  my @n2d = qw( SUN MON TUE WED THU FRI SAT );
  my %d2n; @d2n{ @n2d } = ( 0 .. $#n2d );

  print $d2n{ WED };
'
3

-- 
Affijn, Ruud

"Gewoon is een tijger."