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| author | Zachary Scott <e@zzak.io> | 2014-09-04 14:19:11 -0700 |
|---|---|---|
| committer | Zachary Scott <e@zzak.io> | 2014-09-04 14:19:11 -0700 |
| commit | 67463d5adc7d7d64e501bc3587106e638d154cc7 (patch) | |
| tree | 776300ce08be5402054cedf793273a875987833c | |
| parent | 181d4f21bf17d4c0b27efab794d3a9d54851cb20 (diff) | |
| parent | b947b6eca516fa08cd9a983c81c56af543e45dbf (diff) | |
| download | rails-67463d5adc7d7d64e501bc3587106e638d154cc7.tar.gz rails-67463d5adc7d7d64e501bc3587106e638d154cc7.tar.bz2 rails-67463d5adc7d7d64e501bc3587106e638d154cc7.zip | |
Merge pull request #16803 from Peeja/methods-are-not-duplicable--update-guide
Document that method objects are not `duplicable?` [ci skip]
| -rw-r--r-- | guides/source/active_support_core_extensions.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md index 965de0c761..88d651e13c 100644 --- a/guides/source/active_support_core_extensions.md +++ b/guides/source/active_support_core_extensions.md @@ -162,7 +162,7 @@ Active Support provides `duplicable?` to programmatically query an object about false.duplicable? # => false ``` -By definition all objects are `duplicable?` except `nil`, `false`, `true`, symbols, numbers, class, and module objects. +By definition all objects are `duplicable?` except `nil`, `false`, `true`, symbols, numbers, and class, module, and method objects. WARNING: Any class can disallow duplication by removing `dup` and `clone` or raising exceptions from them. Thus only `rescue` can tell whether a given arbitrary object is duplicable. `duplicable?` depends on the hard-coded list above, but it is much faster than `rescue`. Use it only if you know the hard-coded list is enough in your use case. |