An object which registers itself to listen for updates on another object
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 observersHow do I remove the observer after I receive the first result? Below are two code ways I've tried, but …
android observers android-room android-livedataI saw a few examples about adding observer and handle in the same class, but what I want to know …
ios objective-c nsnotificationcenter nsnotification observersI need to automatically create an invoice on an order once it receives the processing status. Which event should be …
magento observersI have created an observer on the catalog_product_save_after event, but it seems to be getting called before …
magento events observersI'm trying to send orders to a third-party after and ONLY after an order has been paid and has now …
php magento observers magento-1.9I am writing a program using Swift 3.1 and Xcode 8.3.3. I want to create a class, responsible for moving entire view …
ios swift notifications selector observersI have some code in the checkout where I set a key in the session if that key is set …
php magento observers