diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/object/try.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/object/try.rb | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/try.rb b/activesupport/lib/active_support/core_ext/object/try.rb index 16a799ec03..9974b61078 100644 --- a/activesupport/lib/active_support/core_ext/object/try.rb +++ b/activesupport/lib/active_support/core_ext/object/try.rb @@ -5,6 +5,9 @@ class Object # *Unlike* that method however, a +NoMethodError+ exception will *not* be raised # and +nil+ will be returned instead, if the receiving object is a +nil+ object or NilClass. # + # This is also true if the receiving object does not implemented the tried method. It will + # return +nil+ in that case as well. + # # If try is called without a method to call, it will yield any given block with the object. # # Please also note that +try+ is defined on +Object+, therefore it won't work with @@ -31,6 +34,16 @@ class Object if a.empty? && block_given? yield self else + public_send(*a, &b) if respond_to?(a.first) + end + end + + # Same as #try, but will raise a NoMethodError exception if the receiving is not nil and + # does not implemented the tried method. + def try!(*a, &b) + if a.empty? && block_given? + yield self + else public_send(*a, &b) end end @@ -50,4 +63,8 @@ class NilClass def try(*args) nil end + + def try!(*args) + nil + end end |