This article will give you an overview of how to build an easy-to-use iOS network layer by referring to Mr. Casa's network layer architecture design...
Processes and Threads If the process is compared to an electronics factory, then threads are the assembly line. Electronics factories are independent from each other,...
As we all know, Apple signature has TF signature, super signature, enterprise signature three, enterprise signature a signature has occupied half of the Apple signature...
Memory alignment is popularly understood as occupying a specific amount of memory for different data types. 1, security there are a variety of different architecture...
Flutter is a cross-platform App development SDK launched by Google. The self-implementation of a high-performance engine has essential performance advantages over RN and Weex's JS...
Swift was officially opened in 2015. A, directory profile Github:https://github.com/apple/swift few could often see directory: docs: some documentation stdlib: Swift
In the previous chapters, you gained a basic understanding of RunLoop, as well as the underlying objects. How does RunLoop work? To solve this problem,...
NSNull nil: For objects, empty objects do not take up space, equivalent to a "whitewash", back to the original state. NSNull: for Pointers, both object...
The podfile. lock file is automatically generated when we create a new Podfile file, and contains versions of the dependencies we have installed. When we...
Defining KVC (key-value coding) : Allows developers to access or assign values to properties of objects directly by their key names, so that properties of...
Speaking of singletons, it's easy to think of using dispatch_once to build a singleton object in Objective-C, but recently we stumbled into the Dispatch_once trap...
In the previous section, we looked at how widgets are controlled by multiple variables on a single page. The core component is to register variables...
CoreText: Processing, and accessing font size and glyphs data. Provides a low-level programming interface for laying out text and manipulating fonts. The Core Text layout...
1. OSI is the abbreviation of Open System Interconnect, which means Open System interconnection. 1. All network nodes in the same layer have the same...
Detection of off-screen rendering 3. Trigger mode of Layer cornerRadius+maskToBounds It only triggers overlay, such as UIImageView setting background color + image 5. So, at...
In recent days, apple signature market signed off a lot of certificates, especially enterprise signature, we are looking for reasons, even before the more stable...