From: Shadowfirebird <shadowfirebird@...>
Date: 2008-08-13T04:58:08+09:00
Subject: Re: How do I unsplat something?

# How about:

def unsplat(thing)
   if thing.kind_of?(Array)
      thing
   else
      [thing]
   end
end

On Tue, Aug 12, 2008 at 8:47 PM, Chris Shea <cmshea@gmail.com> wrote:
> On Aug 12, 1:14 pm, Patrick Li <patrickli_2...@hotmail.com> wrote:
>> I can't use Array() because I want:
>> {"a"=>2} to become [{"a"=>2}]
>>
>> so far: flatten is the best so far... except that it recursively
>> flattens inner arrays too... which is not ideal but workable for my
>> current use.
>>
>> --
>> Posted viahttp://www.ruby-forum.com/.
>
> There was a ruby quiz that included implementations of a single-level
> flatten[1]. Taking from James Gray's solution[2], and minding your
> requirements regarding hashes, what about this:
>
> def unsplat(the_splatted)
>  if the_splatted.kind_of?(Hash)
>    [the_splatted]
>  else
>    [the_splatted].inject(Array.new) { |arr, a| arr.push(*a) }
>  end
> end
>
> unsplat(1)          # => [1]
> unsplat([2,3])      # => [2, 3]
> unsplat([4,[5,6]])  # => [4, [5, 6]]
> unsplat({'a'=>2})   # => [{"a"=>2}]
>
> HTH,
> Chris
>
> [1] http://www.rubyquiz.com/quiz113.html
> [2] http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/238693
>
>



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