diff options
Diffstat (limited to 'activesupport/lib/active_support')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/try.rb | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/try.rb b/activesupport/lib/active_support/core_ext/object/try.rb index 26b8d58948..6b3fc48a3f 100644 --- a/activesupport/lib/active_support/core_ext/object/try.rb +++ b/activesupport/lib/active_support/core_ext/object/try.rb @@ -63,9 +63,12 @@ class Object try!(*a, &b) if a.empty? || respond_to?(a.first) end - # Same as #try, but will raise a NoMethodError exception if the receiver is not +nil+ and - # does not implement the tried method. - + # Same as #try, but will raise a NoMethodError exception if the receiver is + # not +nil+ and does not implement the tried method. + # + # "a".try!(:upcase) # => "A" + # nil.try!(:upcase) # => nil + # 123.try!(:upcase) # => NoMethodError: undefined method `upcase' for 123:Fixnum def try!(*a, &b) if a.empty? && block_given? if b.arity.zero? @@ -94,6 +97,9 @@ class NilClass nil end + # Calling +try!+ on +nil+ always returns +nil+. + # + # nil.try!(:name) # => nil def try!(*args) nil end |