For very large arrays where bailing out as soon as a match is found is a win: 
my @a = ( 1 .. 1_000_000 ); # some large array

my $want = 5843;
my $index = 0;
++$index until $a[$index] == $want or $index > $#a;

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In reply to Re: how do i find the index of a specific array value? by hdp
in thread How do I find the index of a specific array value? by BigVic

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