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<!DOCTYPE html>
<html>
<head>
<title>Ruby Enumerable Cheatsheet</title>
<link rel="stylesheet" type="text/css" href="CheatSheetStyleSheet.css">

</head>
  <body>
    <header>
      <h2>Ruby Enumerable Cheatsheet</h2>
    </header>
    <ul>
      <li>
        <h3>>> Enumerable.instance_methods.sort</h3>
        => [:all?, :any?, :chunk, :collect, :collect_concat, :count, :cycle,
            :detect, :drop, :drop_while, :each_cons, :each_entry, :each_slice,
            :each_with_index, :each_with_object, :entries, :find, :find_all,
            :find_index, :first, :flat_map, :grep, :group_by, :include?, :inject,
            :map, :max, :max_by, :member?, :min, :min_by, :minmax, :minmax_by,
            :none?, :one?, :partition, :reduce, :reject, :reverse_each, :select,
            :slice_before, :sort, :sort_by, :take, :take_while, :to_a, :zip]
          <br></br>
      </li>
      <li>
        <h3>Searching:</h3>
        >> [1,2,3,4,5].select { |i| i > 3 }
        <br></br>
          => [4,5]
        <br></br>
        >> [1,2,3,4,5].detect { |i| i > 3 }
        <br></br>
         => 4
         <br></br>
        >> [1,2,3,4,5].reject { |i| i > 3 }
        <br></br>
        => [1,2,3]
        <br></br>
      </li>
      <li>
        <h3>Sorting:</h3>
        >> [1, "5", 2, "7", "3"].sort_by { |a| a.to_i }
        <br></br>
        => [1, 2, "3", "5", "7"]
        <br></br>
        >> [1, "5", 2, "7", "3"].sort_by(&:to_i)
        <br></br>
        => [1, 2, "3", "5", "7"]

      </li>
      <h3>Any? and All?:</h3>
      >> [2,4,6,8].all?(&:even?)
      <br></br>
      => true
      <br></br>
      >> [2,4,5,8].any? { |i| i % 2 == 0 }
      <br></br>
      => true
      <br></br>
      >> [2,4,5,8].all? { |i| i % 2 == 0 }
      <br></br>
      => false
      <br></br>
      <li>
        <h3>Reduce:</h3>
        >> [1,2,3].reduce(:+)
        <br></br>
        => 6
        <br></br>
      </li>
      <li>
        <h3>Each:</h3>
        >> hash = Hash.new
        <br></br>
        %w(cat dog wombat).each_with_index { |item, index|
        <br></br>
          hash[item] = index
        }
        hash   #=> {"cat"=>0, "dog"=>1, "wombat"=>2}
      </li>
      <li>
        <h3>Include?:</h3>
        IO.constants.include? :SEEK_SET          #=> true
        <br></br>
        IO.constants.include? :SEEK_NO_FURTHER   #=> false
        <br></br>
      </li>
      <li>
        <h3>MAP:</h3>
        (1..4).map { |i| i*i }      #=> [1, 4, 9, 16]
        <br></br>
        (1..4).collect { "cat"  }   #=> ["cat", "cat", "cat", "cat"]
        <br></br>
      </li>
      <li>
      <h3>Reverse:</h3>
      (1..3).reverse_each { |v| p v }
      <br></br>
      produces:
      <br></br>
          3
          2
          1
      </li>
    </ul>
  </body>
</html>