Sha256: 77f1bb37a7f8794eb31f68ba7f583519a78c375b5cd2443ff559c1f53ccaa96b

Contents?: true

Size: 980 Bytes

Versions: 30

Compression:

Stored size: 980 Bytes

Contents

require 'active_support/core_ext/object/duplicable'

class Object
  # Returns a deep copy of object if it's duplicable. If it's
  # not duplicable, returns +self+.
  #
  #   object = Object.new
  #   dup    = object.deep_dup
  #   dup.instance_variable_set(:@a, 1)
  #
  #   object.instance_variable_defined?(:@a) #=> false
  #   dup.instance_variable_defined?(:@a)    #=> true
  def deep_dup
    duplicable? ? dup : self
  end
end

class Array
  # Returns a deep copy of array.
  #
  #   array = [1, [2, 3]]
  #   dup   = array.deep_dup
  #   dup[1][2] = 4
  #
  #   array[1][2] #=> nil
  #   dup[1][2]   #=> 4
  def deep_dup
    map { |it| it.deep_dup }
  end
end

class Hash
  # Returns a deep copy of hash.
  #
  #   hash = { a: { b: 'b' } }
  #   dup  = hash.deep_dup
  #   dup[:a][:c] = 'c'
  #
  #   hash[:a][:c] #=> nil
  #   dup[:a][:c]  #=> "c"
  def deep_dup
    each_with_object(dup) do |(key, value), hash|
      hash[key.deep_dup] = value.deep_dup
    end
  end
end

Version data entries

30 entries across 30 versions & 2 rubygems

Version Path
activesupport-4.0.13 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.13.rc1 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.11.1 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.12 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.11 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.10 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.10.rc2 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.10.rc1 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.9 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.8 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.7 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.6 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.6.rc3 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.6.rc2 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.6.rc1 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.5 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.4 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.4.rc1 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.3 lib/active_support/core_ext/object/deep_dup.rb
activesupport-4.0.2 lib/active_support/core_ext/object/deep_dup.rb