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Re: Redefine package subroutines

by Melly (Hermit)
on Dec 21, 2012 at 06:22 UTC ( #1009874=note: print w/replies, xml ) Need Help??

in reply to Redefine package subroutines

One gotcha here if you're not expecting it is that package subroutines set $_[0] to the value on the left-side of ->. So, for example, the following returns 'FP', not 'Hello':

print FP->subtest1('Hello'); package FP;{sub subtest1{return shift;}}
map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2 -$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20
Tom Melly, pm (at) cursingmaggot (stop) co (stop) uk

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[stevieb]: My GPIO expander chips should arrive tomorrow, but I think I'll throw a shift register against them and see if all six I have will turn at once. Amps are near the breaking point, but I want to know max sustainable V and I output.

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