diff options
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/active_support_core_extensions.md | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md index 61f1715dab..f36cacfe8d 100644 --- a/guides/source/active_support_core_extensions.md +++ b/guides/source/active_support_core_extensions.md @@ -155,15 +155,6 @@ Complex(1).duplicable? # => true 1.method(:+).duplicable? # => false ``` -`duplicable?` matches the current Ruby version's `dup` behavior, -so results will vary according the version of Ruby you're using. -In Ruby 2.4, for example, Complex and Rational are not duplicable: - -```ruby -Rational(1).duplicable? # => false -Complex(1).duplicable? # => false -``` - 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. NOTE: Defined in `active_support/core_ext/object/duplicable.rb`. |