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preface Harbeth It is a small part of utilities and extensions on Apple's Metal framework, which is committed to making your Swift GPU code more concise and allowing you to build pipeline prototypes faster. This paper introduces and designs the filter based on GPU, graphics processing and filter making 👒👒👒 Function list 🟣 At present, Met ...

background With the increasing amount of code and the expansion of the team, when we want to iterate quickly, we often want to get the requirements online as soon as possible, resulting in the code is not very standardized, leaving a pile of technical debt over a long time, and the quality of the code is not guaranteed. So I began to try some ...

Moderately aliasing types can make your code easier to understand, more efficient to develop, and more maintainable. 1. typealias (alias) Typeealias are used to alias types. typealias Byte = Int8 typealias Short = Int16 typealias Long = Int64 typealias Date = (year: Int, month: Int, day: Int) func test(_ date: Date) { print(date.year) ...

1, Foreword As mentioned above, under the OC/Swift mix, the following suggestions are made for the data types of attributes or parameters: 1. Use immutable types as much as possible and immutable types as little as possible. (suggestions: NSString *, NSArray *, - NSDictionary *)2. Use generics as much as possible to specify the type of el ...

preface Hello, everyone, I've been learning to encode with Swift recently. Because many previous projects were implemented with OC, I'm still in the stage of learning about Swift. In order to improve my learning efficiency, I will set a short-term goal for myself every time. This time, in order to speed up my starting Swift, my goal is to comp ...

Let's start with the conclusion: map uses 3 lines of code to solve the problem of 5 lines of code in the for loop, which is equivalent to a 40% increase in efficiency You can't learn without (I said) If you don't use it, you won't be able to use it Because you don't know the usage scenario, you can't use it because you haven't learned it ...

What is the effect of hollowing, the following figure is a text with the effect of hollowing out: As can be seen from the figure, the text is transparent, and you can see the following picture content, while other parts of the UILabel have a white background. Using Quartz 2D to draw the hollowing effect, the general idea is as follows: Implem ...

01 Background In 2014, Apple released a new language Swift at WWDC. Since then, it has been continuously updated, iterated and optimized. Major companies ...

Video player Before iOS 9, MPMoviePlayerController was used. With the continuous iteration of iOS, AVPlayer has become the mainstream. To add a resource file to a project: import UIKit import AVFoundation class ViewController: UIViewController{ var avPlayer : AVPlayer? override func viewDidLoad() { super.viewDidLoad() ...

preface A long time ago, a simple video player was open-source. Due to its long disrepair, the effect was terrible. Recently, it specially took time to deeply reconstruct it. The old version will not be maintained later. The new version is implemented by Swift, and more functions will be added later. If you don't want to read the text, please d ...