Top "Observer-pattern" questions

A design pattern in which an object, called the subject, maintains a list of its dependents, called observers and notifies them automatically of any state changes, usually by calling one of their methods.

Reactive Extensions for .NET (Rx) in WPF - MVVM

I am using Reactive extensions for NET (Rx) with Caliburn.Micro in my WPF app. I'm trying to port my …

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How to implement the Observer pattern with Java RMI?

I have a client that starts a long running process on the server. At regular intervals, I'd like to show …

java rmi observer-pattern
Best Publish/Subscribe "Middleware"

I'm in the market for a good open source network based Pub/Sub (observer pattern) library. I haven't found any …

soa observer-pattern middleware publish-subscribe mom
Problems implementing the "Observer" pattern

I have met an interesting problem while implementing the Observer pattern with C++ and STL. Consider this classic example: class …

c++ design-patterns observer-pattern
iPhone : camera autofocus observer?

I would like to know if it's possible to receive notification about autofocus inside an iPhone application? I.E, does …

iphone camera notifications observer-pattern autofocus
Observer for removed items in the cart

Is there an observer which can be used to observe events when a product is removed from the cart? I …

magento observer-pattern