diff options
Diffstat (limited to 'activesupport/lib/active_support')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/object/instance_variables.rb | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/instance_variables.rb b/activesupport/lib/active_support/core_ext/object/instance_variables.rb index 77a3cfc21d..eda9694614 100644 --- a/activesupport/lib/active_support/core_ext/object/instance_variables.rb +++ b/activesupport/lib/active_support/core_ext/object/instance_variables.rb @@ -30,35 +30,4 @@ class Object else alias_method :instance_variable_names, :instance_variables end - - # Copies the instance variables of +object+ into +self+. - # - # Instance variable names in the +exclude+ array are ignored. If +object+ - # responds to <tt>protected_instance_variables</tt> the ones returned are - # also ignored. For example, Rails controllers implement that method. - # - # In both cases strings and symbols are understood, and they have to include - # the at sign. - # - # class C - # def initialize(x, y, z) - # @x, @y, @z = x, y, z - # end - # - # def protected_instance_variables - # %w(@z) - # end - # end - # - # a = C.new(0, 1, 2) - # b = C.new(3, 4, 5) - # - # a.copy_instance_variables_from(b, [:@y]) - # # a is now: @x = 3, @y = 1, @z = 2 - def copy_instance_variables_from(object, exclude = []) #:nodoc: - exclude += object.protected_instance_variables if object.respond_to? :protected_instance_variables - - vars = object.instance_variables.map(&:to_s) - exclude.map(&:to_s) - vars.each { |name| instance_variable_set(name, object.instance_variable_get(name)) } - end end |