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-rw-r--r-- | guides/source/active_support_core_extensions.md | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/guides/source/active_support_core_extensions.md b/guides/source/active_support_core_extensions.md index 556b5ede3c..f6fc255c24 100644 --- a/guides/source/active_support_core_extensions.md +++ b/guides/source/active_support_core_extensions.md @@ -248,6 +248,13 @@ end @person.try { |p| "#{p.first_name} #{p.last_name}" } ``` +Note that `try` will swallow no-method errors, returning nil instead. If you want to protect against typos, use `try!` instead: + +```ruby +@number.try(:nest) # => nil +@number.try!(:nest) # NoMethodError: undefined method `nest' for 1:Fixnum +``` + NOTE: Defined in `active_support/core_ext/object/try.rb`. ### `class_eval(*args, &block)` |