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iNecas/hash_constructor_differences

Created February 1, 2011 10:29
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Difference between Hash.new(arg) and Hash.new(&block)
Raw
hash_constructor_differences
hash = Hash.new("") # => {}
hash[1] << "Hello" # => "Hello"
hash[2] # => "Hello"
hash = Hash.new{|h,k| h[k] = ""} # => {}
hash[1] << "Hello" # => "Hello"
hash[2] # => ""
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