tulios/nightcrawler_swift

module NightcrawlerSwift
  module Ext
    module Hash

      unless {}.respond_to?(:symbolize_keys)
        def symbolize_keys
          {}.tap do |result|
            keys.each {|k| result[k.to_sym] = self[k]}
          end
        end

        def symbolize_keys!
          self.tap do
            keys.each {|k| self[k.to_sym] = delete(k)}
          end
        end
      end

      unless {}.respond_to?(:compact)
        def compact
          {}.tap do |result|
            keys.each {|k| result[k] = self[k] unless self[k].nil?}
          end
        end

        def compact!
          self.tap do
            keys.each do |k|
              value = delete(k)
              self[k] = value unless value.nil?
            end
          end
        end
      end

    end
  end
end

Hash.send :include, NightcrawlerSwift::Ext::Hash