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.
An interviewer asked me: What is Observer and Observable and when should we use them? I wasn't aware of these …
java design-patterns observable observer-pattern observersI am trying to implement something like a delegation pattern in Angular. When the user clicks on a nav-item, I …
angular observer-pattern observable eventemitter event-delegationI recently started digging into C# but I can't by my life figure out how delegates work when implementing the …
c# events delegates observer-patternI'm setting up an after_save callback in my model observer to send a notification only if the model's published …
ruby-on-rails ruby-on-rails-4 model callback observer-patternI realise this question has to do with event-handling and i've read about Python event-handler a dispatchers, so either it …
python event-handling observer-patternIs there any way that I can pass a function as a json string (conversion with JSON.stringify), send it …
javascript jquery json observer-patternI want to implement the Observable pattern in Python for a couple of workers, and came across this helpful snippet: …
python design-patterns functional-programming callback observer-patternI want to know about how to set our own Listeners in java.For example I have a function that …
java interface listener observer-patternIt seems to me that the Observer design pattern as described in GOF is really the same thing as Listeners …
design-patterns language-agnostic listener observer-patternI want to send an alert message to any subscribers when a trap occurred. The code I created works fine …
c# delegates event-handling observer-pattern