keys.rb in gorillib-0.1.0

- old
+ new
@@ -1,42 +1,4 @@
+require 'gorillib/hashlike/keys'
 class Hash
-  # Return a new hash with all keys converted to strings.
-  def stringify_keys
-    dup.stringify_keys!
-  end unless method_defined?(:stringify_keys)
-
-  # Destructively convert all keys to strings.
-  def stringify_keys!
-    keys.each do |key|
-      self[key.to_s] = delete(key)
-    end
-    self
-  end unless method_defined?(:stringify_keys!)
-
-  # Return a new hash with all keys converted to symbols, as long as
-  # they respond to +to_sym+.
-  def symbolize_keys
-    dup.symbolize_keys!
-  end unless method_defined?(:symbolize_keys)
-
-  # Destructively convert all keys to symbols, as long as they respond
-  # to +to_sym+.
-  def symbolize_keys!
-    keys.each do |key|
-      self[(key.to_sym rescue key) || key] = delete(key)
-    end
-    self
-  end unless method_defined?(:symbolize_keys!)
-
-  # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch.
-  # Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols
-  # as keys, this will fail.
-  #
-  # ==== Examples
-  #   { :name => "Rob", :years => "28" }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key(s): years"
-  #   { :name => "Rob", :age => "28" }.assert_valid_keys("name", "age") # => raises "ArgumentError: Unknown key(s): name, age"
-  #   { :name => "Rob", :age => "28" }.assert_valid_keys(:name, :age) # => passes, raises nothing
-  def assert_valid_keys(*valid_keys)
-    unknown_keys = keys - [valid_keys].flatten
-    raise(ArgumentError, "Unknown key(s): #{unknown_keys.join(", ")}") unless unknown_keys.empty?
-  end unless method_defined?(:assert_valid_keys)
+  include Gorillib::Hashlike::Keys
 end