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| author | Xavier Noria <fxn@hashref.com> | 2010-03-23 00:19:17 +0100 |
|---|---|---|
| committer | Xavier Noria <fxn@hashref.com> | 2010-03-23 00:19:17 +0100 |
| commit | 926ff0e0a141e27589b4f5c83e168b10a9ac0a54 (patch) | |
| tree | 7813b23a948c26bef07a0f4e357b61f251f818c1 /railties/guides | |
| parent | dea701bd2c6369cd1928b2bb9ff8f17a38fa0c73 (diff) | |
| download | rails-926ff0e0a141e27589b4f5c83e168b10a9ac0a54.tar.gz rails-926ff0e0a141e27589b4f5c83e168b10a9ac0a54.tar.bz2 rails-926ff0e0a141e27589b4f5c83e168b10a9ac0a54.zip | |
AS guide: documents Module#remove_possible_method
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+ |