grep on the index. 
my $search = 'foo';
my ($where) = grep { $question[$_] eq $search } 0 .. $#question;

[download]

If you have to do this very often with the same array, it might be better to build a lookup hash. Hash lookup is very fast. 

# once:
my %lookup;
@lookup{@question} = ( 0 .. $#question );
# many times:
my $search = 'boo';
$where = $lookup{$search};

[download]

In reply to Re: array index by bart
in thread array index by monkeybus

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