diff options
Diffstat (limited to 'railties/guides')
| -rw-r--r-- | railties/guides/source/active_support_core_extensions.textile | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/railties/guides/source/active_support_core_extensions.textile b/railties/guides/source/active_support_core_extensions.textile index db28e07642..0a9374e028 100644 --- a/railties/guides/source/active_support_core_extensions.textile +++ b/railties/guides/source/active_support_core_extensions.textile @@ -799,6 +799,25 @@ end NOTE: Defined in +active_support/core_ext/module/delegation.rb+. +h4. Method Removal + +h5. +remove_possible_method+ + +The method +remove_possible_method+ is like the standard +remove_method+, except it silently returns on failure: + +<ruby> +class A; end + +A.class_eval do + remove_method(:nonexistent) # raises NameError + remove_possible_method(:nonexistent) # no problem, continue +end +</ruby> + +This may come in handy if you need to define a method that may already exist, since redefining a method issues a warning "method redefined; discarding old redefined_method_name". + +NOTE: Defined in +active_support/core_ext/module/remove_method.rb+. + h4. Parents h5. +parent+ |