File: utils.rb

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module Moneta
  # @api private
  module Utils
    extend self

    def without(hash, *keys)
      return hash if hash.empty?
      if keys.any? { |k| hash.include?(k) }
        hash = hash.dup
        keys.each { |k| hash.delete(k) }
      end
      hash
    end

    def only(hash, *keys)
      return hash if hash.empty?
      ret = {}
      keys.each { |k| ret[k] = hash[k] }
      ret
    end
  end
end