Re: Get Position of Element in an array

this will impress your professor! =)

  DB<1> @input=('a','b','c','d');
 
  DB<2> %pos= map { $_=>$i++ } @input 
 
  DB<3> print $pos{a}
0
  DB<4> print $pos{d}
3
[download]

... so what if elements aren't unique?

Cheers Rolf

Comment on Re: Get Position of Element in an array Download Code

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Re^2: Get Position of Element in an array by LanX (Saint) on Nov 16, 2010 at 19:26 UTC
>... so what if elements aren't unique? since this question hasn't been answered yet here a variation for finding the first idx! `%pos= map { $_=>$i++ } reverse @input;` [download] If you need it more than once, then the overhead for building a hash will easily pay off. Cheers Rolf	[reply] [d/l]