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Re^2: fibo's 66 chars

by Roy Johnson (Monsignor)
on May 27, 2009 at 21:17 UTC ( #766514=note: print w/ replies, xml ) Need Help??

in reply to Re: fibo's 66 chars
in thread fibo's 66 chars

Since you only use the parameter once, it's cheaper to just reference it as $ARGV[0] pop it inline rather than assign it to anything.

@b=(0,1);push@b,$b[-2]+$b[-1]for 2..pop;print$b[-2]
You can save fourteen more strokes (and, irrelevantly, memory) by not using an array and using convoluted scalar assignment with a variable that is pre-initialized:
$b=1;$?=($b+=$?)-$?for 2..pop;print$?

Caution: Contents may have been coded under pressure.

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