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Re: Idiom to return 0 or random number of array elements

by LanX (Saint)
on Dec 07, 2012 at 05:48 UTC ( [id://1007690]=note: print w/replies, xml ) Need Help??


in reply to Idiom to return 0 or random number of array elements

just include the possibility of @array[0..-1] which returns an empty list.

try something like: @array[0 .. (int rand (@array+1)) -1]

  DB<130>  @array=a..c
 => ("a", "b", "c")
 
  DB<131> @array[0 .. -1 + int rand 1+ @array]
 => ()
  
  DB<132> @array[0 .. -1 + int rand 1+ @array]
 => ("a", "b")
 
  DB<133> @array[0 .. -1 + int rand 1+ @array]
 => ("a")
 
  DB<134> @array[0 .. -1 + int rand 1+ @array]
 => ("a", "b", "c")
 
  DB<135> @array[0 .. -1 + int rand 1+ @array]
 => ("a", "b")

[download]

Cheers Rolf

Replies are listed 'Best First'.
Re^2: Idiom to return 0 or random number of array elements
by Anonymous Monk on Dec 07, 2012 at 06:04 UTC
    Perfect, that's what I was looking for. Guess I was close, though. Thanks!
[reply]

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