dictionary - Create Ruby hash without `to_h` method -

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I am trying to generate a key / value pair for all the letters of the English alphabet.

In Ruby 2.1, I can use it: 

  ('a' .. 'z'). Each_with_index.to_h # = & gt; {"A" = & gt; 0, "b" = & gt; 1, "c" = & gt; 2, ...}   
 However, in Ruby 1.9.x, the  to_h  method does not exist. What is the best solution for this matter?   
 
 
 Two Elements Array.  
  Hush [('a' .. 'z'). Every_V_V_Nordac TOA]]

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