From: Intransition <transfire@...>
Date: 2012-06-25T08:35:19+09:00
Subject: Enumerable#unassociate

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Have a look:

  module Enumerable

    # Take an associative array and unassociate it.
    #
    #   [[:a,1], [:b,2]].unassociate.to_a     #=> [:a, [1], :b, [2]]
    #   [[:a,1], [:b,2]].unassociate(1).to_a  #=> [:a, 1, :b, 2]
    #
    def unassociate(index = 1..-1)
      return to_enum(:unassociate, index) unless block_given?

      each do |v|
        case v
        when Array
          yield v[0]
          yield v[index]
        else
          yield v
          yield nil
        end
      end
    end

  end

Is it a good method name? Is 1..-1 the best default?

Other thoughts/ suggestions?



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<div>Have a look:</div><br><div><div>&nbsp; module Enumerable</div><div><br=
></div><div>&nbsp; &nbsp; # Take an associative array and unassociate it.</=
div><div>&nbsp; &nbsp; #</div><div>&nbsp; &nbsp; # &nbsp; [[:a,1], [:b,2]].=
unassociate.to_a &nbsp; &nbsp; #=3D&gt; [:a, [1], :b, [2]]</div><div>&nbsp;=
 &nbsp; # &nbsp; [[:a,1], [:b,2]].unassociate(1).to_a &nbsp;#=3D&gt; [:a, 1=
, :b, 2]</div><div>&nbsp; &nbsp; #</div><div>&nbsp; &nbsp; def unassociate(=
index =3D 1..-1)</div><div>&nbsp; &nbsp; &nbsp; return to_enum(:unassociate=
, index) unless block_given?</div><div><br></div><div>&nbsp; &nbsp; &nbsp; =
each do |v|</div><div>&nbsp; &nbsp; &nbsp; &nbsp; case v</div><div>&nbsp; &=
nbsp; &nbsp; &nbsp; when Array</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 yield v[0]</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; yield v[index]</di=
v><div>&nbsp; &nbsp; &nbsp; &nbsp; else</div><div>&nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; yield v</div><div>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; yield nil</d=
iv><div>&nbsp; &nbsp; &nbsp; &nbsp; end</div><div>&nbsp; &nbsp; &nbsp; end<=
/div><div>&nbsp; &nbsp; end</div><div><br></div><div>&nbsp; end</div></div>=
<div><br></div><div><div>Is it a good method name? Is 1..-1 the best defaul=
t?</div></div><div><br></div><div>Other thoughts/ suggestions?<br></div><di=
v><br></div><div><br></div>
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