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/hashes.rb

Created March 3, 2012 20:18
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hashes.rb
1.9.3p0 :001 > a = Hash.new('default')
=> {}
1.9.3p0 :002 > a['cat']
=> "default"
1.9.3p0 :003 > a['dog']
=> "default"
1.9.3p0 :004 > a['real_key'] = 'real_value'
=> "real_value"
1.9.3p0 :005 > a
=> {"real_key"=>"real_value"}
1.9.3p0 :006 >
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