Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/hashr/core_ext/ruby/hash.rb

Direct Known Subclasses

Hashr

Instance Method Summary collapse

Instance Method Details

#deep_merge(other) ⇒ Object

deep_merge_hash! by Stefan Rusterholz, see www.ruby-forum.com/topic/142809



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# File 'lib/hashr/core_ext/ruby/hash.rb', line 34

def deep_merge(other)
  merger = proc { |key, v1, v2| Hash === v1 && Hash === v2 ? v1.merge(v2, &merger) : v2 }
  merge(other, &merger)
end

#deep_symbolize_keys ⇒ Object 



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# File 'lib/hashr/core_ext/ruby/hash.rb', line 12

def deep_symbolize_keys
   symbolizer = lambda do |value|
    case value
    when Hash
      value.deep_symbolize_keys
    when Array
      value.map { |value| symbolizer.call(value) }
    else
      value
    end
  end
  inject({}) do |result, (key, value)|
    result[(key.to_sym rescue key) || key] = symbolizer.call(value)
    result
  end
end

#deep_symbolize_keys! ⇒ Object 



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# File 'lib/hashr/core_ext/ruby/hash.rb', line 29

def deep_symbolize_keys!
  replace(deep_symbolize_keys)
end

#except(*less_keys) ⇒ Object 



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# File 'lib/hashr/core_ext/ruby/hash.rb', line 8

def except(*less_keys)
  slice(*keys - less_keys)
end

#slice(*keep_keys) ⇒ Object 



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# File 'lib/hashr/core_ext/ruby/hash.rb', line 2

def slice(*keep_keys)
  h = {}
  keep_keys.each { |key| h[key] = fetch(key) if key?(key) }
  h
end