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I agree, very nice. If you're golfing this, I have a few reductions for you:

You can save yourself a couple of characters by using pop instead of shift.

Also, if you use -l, you can get rid of the quotes and newline:
$a=pop;@b=(0,1);push@b,$b[-2]+$b[-1]while$#b<$a;print$b[-2]

Then, you can cut down the while$#b<$a by using for(2..$a):
$a=pop;@b=(0,1);push@b,$b[-2]+$b[-1]for(2..$a);print$b[-2]

Of all the causes that conspire to blind
Man's erring judgment, and misguide the mind,
What the weak head with strongest bias rules,
Is pride, the never-failing vice of fools.
-- Pope.

In reply to Re: fibo's 66 chars by pepik_knize
in thread fibo's 66 chars by Oromis92

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