diff options
Diffstat (limited to 'lib/observer.rb')
| -rw-r--r-- | lib/observer.rb | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/observer.rb b/lib/observer.rb index 3756794952..99610f7505 100644 --- a/lib/observer.rb +++ b/lib/observer.rb @@ -15,13 +15,14 @@ # module, which provides the methods for managing the associated observer # objects. # -# The observers must implement a method called +update+ to receive -# notifications. -# # The observable object must: # * assert that it has +#changed+ # * call +#notify_observers+ # +# An observer subscribes to updates using Observable#add_observer, which also +# specifies the method called via #notify_observers. The default method for +# #notify_observers is #update. +# # === Example # # The following example demonstrates this nicely. A +Ticker+, when run, |