Recently, I prepared for the interview and summarized some KVO questions. The answers can be found in the following blogs. A key-value Observer that allows...
The flow of alloc method is analyzed above, and it is concluded that the call flow of alloc method is alloc ->_objc_rootAlloc ->callAlloc ->_objc_rootAllocWithZone
IOS automatic package script, and realize the image material, text resources, part of the code replacement and re-signature, based on Python implementation.
The simple code emulates the KVO derived class implementation. Of course, some people will ask, "There are many examples on the Internet, just look at...
KVO is a mechanism based on KVC that can notify objects of changes in property values of other objects. Usage addObserver: forKeyPath: options: context: the...
Many iOS projects are now moving to Swift. I believe Swift will soon become a must-have skill for iOS engineers. Dictionaries play an important role...
"This is the second day of my participation in the First Challenge 2022, for more details: First Challenge 2022". KVO, KVO, whole-process key-value observing
1. Introduction to KVO The full name of KVO is key-value-observing, a mechanism that allows you to notify other objects of their specified property changes....
We see that the difference between Person1 and Person2 is that person2 adds listeners. So the guess is that the Person2 instance object has changed....
In iOS development, you often need to communicate and pass data between different objects, different views, or different View controllers. The main implementation methods are:...
APP crashes can be divided into two types: signal-grabber crashes and signal-grabber crashes. Array out of bounds: APP crashes due to index out of bounds...
KVO stands for KeyValueObserving, commonly known as key value monitoring. Allows you to listen for changes in object properties in response to specific events. Nothing...