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author | Josh Susser <josh@hasmanythrough.com> | 2009-01-16 17:26:08 -0800 |
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committer | Pratik Naik <pratiknaik@gmail.com> | 2009-01-18 00:47:38 +0000 |
commit | 78f2c19ae7f9236591c261eecdf0c4b570e3ea1e (patch) | |
tree | 399b9125a11c1a592518a310226d94750bfe0f38 /activesupport/lib/active_support/core_ext | |
parent | 3b1cd9e525fa74c681a1bd2261881d16d5d9106d (diff) | |
download | rails-78f2c19ae7f9236591c261eecdf0c4b570e3ea1e.tar.gz rails-78f2c19ae7f9236591c261eecdf0c4b570e3ea1e.tar.bz2 rails-78f2c19ae7f9236591c261eecdf0c4b570e3ea1e.zip |
Refactor Object#try to use inheritance. [#1774 state:resolved]
Signed-off-by: Pratik Naik <pratiknaik@gmail.com>
Diffstat (limited to 'activesupport/lib/active_support/core_ext')
-rw-r--r-- | activesupport/lib/active_support/core_ext/object/misc.rb | 17 | ||||
-rw-r--r-- | activesupport/lib/active_support/core_ext/try.rb | 30 |
2 files changed, 30 insertions, 17 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/misc.rb b/activesupport/lib/active_support/core_ext/object/misc.rb index c0a109ecf3..4acdfa3d6c 100644 --- a/activesupport/lib/active_support/core_ext/object/misc.rb +++ b/activesupport/lib/active_support/core_ext/object/misc.rb @@ -87,21 +87,4 @@ class Object respond_to? "acts_like_#{duck}?" end - # Tries to send the method only if object responds to it. Return +nil+ otherwise. - # It will also forward any arguments and/or block like Object#send does. - # - # ==== Example : - # - # # Without try - # @person ? @person.name : nil - # - # With try - # @person.try(:name) - # - # # try also accepts arguments/blocks for the method it is trying - # Person.try(:find, 1) - # @people.try(:map) {|p| p.name} - def try(method, *args, &block) - send(method, *args, &block) unless self.nil? - end end diff --git a/activesupport/lib/active_support/core_ext/try.rb b/activesupport/lib/active_support/core_ext/try.rb new file mode 100644 index 0000000000..0dccd40c55 --- /dev/null +++ b/activesupport/lib/active_support/core_ext/try.rb @@ -0,0 +1,30 @@ +class Object + # Tries to send the method only if object responds to it. Return +nil+ otherwise. + # It will also forward any arguments and/or block like Object#send does. + # + # ==== Examples + # + # Without try + # @person && @person.name + # or + # @person ? @person.name : nil + # + # With try + # @person.try(:name) + # + # Try also accepts arguments/blocks for the method it is trying + # Person.try(:find, 1) + # @people.try(:collect) {|p| p.name} + #-- + # This method def is for rdoc only. The alias_method below overrides it as an optimization. + def try(method, *args, &block) + send(method, *args, &block) + end + alias_method :try, :__send__ +end + +class NilClass + def try(*args) + nil + end +end |