From: Robert Klemme <shortcutter@...>
Date: 2010-04-25T19:40:05+09:00
Subject: Re: Metaprogramming - Array initialization

On 04/25/2010 12:35 AM, Rolf Pedersen wrote:
> [Note:  parts of this message were removed to make it a legal post.]
> 
> A subtle improvement to the function, as I failed to remember that I could
> expand an array to multiple arguments again when calling the function
> recursively:
> 
> def make_array(*a)
>   if a.size > 1
>     Array.new(a.shift){make_array(*a)}
>   elsif a.size == 1
>     Array.new(a.shift)
>   end
> end

And what about the case of an empty argument list?


def make_array(*a)
   case a.size
   when 0
     raise ArgumentError, "Need at least one dimension"
   when 1
     Array.new(a.shift)
   else
     Array.new(a.shift){make_array(*a)}
   end
end

Kind regards

	robert

-- 
remember.guy do |as, often| as.you_can - without end
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