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use List::MoreUtils 'first_index';
my @array = qw( a b c d e f g h );
print "Found 'd' at $found_ix.\n";
output: Found 'd' at 3.
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
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