Module: Hasugar

Included in:
Hash
Defined in:
lib/hasugar.rb,
lib/hasugar/version.rb

Constant Summary collapse

VERSION = 
"0.0.1"

Instance Method Summary collapse

Instance Method Details

#delete_keys(*keys) ⇒ Object 



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# File 'lib/hasugar.rb', line 39

def delete_keys(*keys)
  _dup = dup

  keys.flatten.each do |k|
    _dup.delete(k)
  end

  _dup
end

#delete_keys!(*keys) ⇒ Object 



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# File 'lib/hasugar.rb', line 31

def delete_keys!(*keys)
  keys.flatten.each do |k|
    delete(k)
  end

  self
end

#keep_keys(*keys) ⇒ Object 



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# File 'lib/hasugar.rb', line 25

def keep_keys(*keys)
  keys_to_delete = self.keys - keys.flatten

  delete_keys(keys_to_delete)
end

#keep_keys!(*keys) ⇒ Object 



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# File 'lib/hasugar.rb', line 19

def keep_keys!(*keys)
  keys_to_delete = self.keys - keys.flatten

  delete_keys!(keys_to_delete)
end

#require_keys(*keys) ⇒ Object 



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# File 'lib/hasugar.rb', line 49

def require_keys(*keys)
  all_keys = keys.all? { |k|
    if k.class == Symbol
      self.key? k
    elsif k.class == Hash
      k.keys.all? { |i_k|
        self[i_k].require_keys(k[i_k])
      }
    elsif k.class == Array
      require_keys(*k)
    else
      false
    end
  }

  all_keys
end

#transform(transformations) ⇒ Object 



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# File 'lib/hasugar.rb', line 5

def transform(transformations)
  _dup = dup

  transformations.each do |k, v|
    if v.class == Hash
      _dup[k] = _dup[k].transform(v)
    else
      _dup[v] = _dup.delete(k) if _dup[k]
    end
  end

  _dup
end