Class: Zafu::OrderedHash

Inherits:
Hash
  • Object
show all
Defined in:
lib/zafu/ordered_hash.rb

Instance Method Summary collapse

Instance Method Details

#[]=(k, v) ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 8

def []=(k, v)
  get_keys << k unless get_keys.include?(k)
  super
end

#delete(k) ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 41

def delete(k)
  get_keys.delete(k)
  super
end

#dup ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 46

def dup
  copy = super
  copy.instance_variable_set(:@keys, keys)
  copy
end

#each ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 35

def each
  keys.each do |k|
    yield(k, self[k])
  end
end

#get_keys ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 27

def get_keys
  @keys ||= o_keys
end

#keys ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 31

def keys
  get_keys.dup
end

#merge(hash) ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 20

def merge(hash)
  res = dup
  res.merge!(hash)
  res
end

#merge!(hash) ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 13

def merge!(hash)
  hash.keys.each do |k|
    get_keys << k unless get_keys.include?(k)
  end
  super
end

#o_keys ⇒ Object 



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# File 'lib/zafu/ordered_hash.rb', line 26

alias o_keys keys