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Re: Golf: ROT-n

by dragonchild (Archbishop)
on Nov 09, 2004 at 16:46 UTC ( #406386=note: print w/replies, xml ) Need Help??

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  1. or download this
    #        1         2         3         4         5
    # 3456789 123456789 123456789 123456789 123456789 1234567890
    $n=shift;print chr(($n-97+ord)%26+97)for split//,pop
    
  2. or download this
    #        1         2         3         4         5
    # 3456789 123456789 123456789 123456789 123456789 1234567890
    print chr 97+($ARGV[0]-97+ord)%26for pop=~/./g
    
  3. or download this
    #        1         2         3         4         5
    # 3456789 123456789 123456789 123456789 123456789 1234567890
    print chr 97+($ARGV[0]+7+ord)%26for pop=~/./g
    

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[Eily]: It can also be used to force a copy, and remove magic from a variable
[Eily]: there was a post some time ago about variable coming from regex taking more space than the same string defined directly IIRC
[Eily]: and if there's XS, make sure the scalar holds a string representation, that sounds like bad practice though (forcing that on the call side)
[choroba]: You should never pass $1 without double quotes to a sub
[choroba]: or "I should never", at least
[choroba]: that's not the sub's business

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