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Re^2: Exponential Function Programming

by Dominus (Parson)
on Nov 23, 2007 at 19:45 UTC ( #652646=note: print w/replies, xml ) Need Help??

in reply to Re: Exponential Function Programming
in thread Exponential Function Programming

sub my_factorial { ... if($n == 0) { $r=0; } return $r; }
Your function says that 0 factorial is 0. But it's not; it's 1.

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Re^3: Exponential Function Programming
by blazar (Canon) on Nov 24, 2007 at 13:42 UTC

    Perl 6 is very generous in this:

    pugs> sub postfix:<!> (Int $n) { [*] 1..$n } undef pugs> say $_! for ^10 1 1 2 6 24 120 720 5040 40320 362880 undef

    (I personally believe that I've posted this before here and in different media, but that's jut because it's quite about the only thing I can actually do in pugs ATM.)

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