From: Pierre Barbier de Reuille <Pierre.Barbier_de_Reuille@...>
Date: 2006-03-28T21:53:58+09:00
Subject: Re: Array resizing

Victor Shepelev a �crit :
>  Maybe dumb question, but...
>
>  I have not found anything like Array.resize, i.e.
>
>  a = [1,2]
>
>  a.resize(5)     #=> [1,2,nil,nil,nil] a.resize(5, 3)  #=> [1,2,3,3,3]
>
>
>  I can use Array.fill, but
>
>  a.fill(3, a.size, a.size+2)
>
>  looks a bit ugly, not?
>
>  Moreover, if I want to resize to size lesser then array is, I need
>  slice.
>
>  Why not to have all-purpose resize?
>
>  Victor.
>
You may try :

a = [1,2]
a.fill(3, -1, 3)  #=> [1,2,3,3,3]

So you may code yourself your resize :

class Array
  def resize(new_size, value=nil)
    if new_size < length
         slice!(new_size, length)
    else
         fill(value, -1, new_size-length)
    end
  self
  end
end

Pierre