From: 7stud -- <lists@...>
Date: 2012-12-11T07:58:51+09:00
Subject: Re: Dynamically create an array

grades = [
  { "subject" => "english",
    "Jim" => 94,
    "Billy" => 58
  },

  { "subject" => "math",
    "Jim" => 90,
    "Billy" => 80
  },

  {  "subject" => "science",
     "Jim" => 99,
     "Billy" => 58
  },

]

jim = []
billy = []

grades.each do |hash|
  jim << hash['Jim']
  billy << hash['Billy']
end

p jim
p billy

--output:--
[94, 90, 99]
[58, 80, 58]

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