Swift, C and c mixed

     Last article Write the mixed calls of swift, C and C + +. I think you have basic skills for these simple calls. So let's see how to use C array in swift. For this array. For pointers, we can assign values directly and read them directly. For arrays, so can we. Let's see. How to read. Test envir ...

Posted on Wed, 23 Oct 2019 20:30:41 -0700 by rahulephp

iOS knowledge combing - multi thread API mathematics

In general, there are four schemes for using multithreading on the iOS platform: Pthreads interface based on c language, which is POSIX c language is widely used in programming, but it is seldom used in iOS development. The exposed interface is relatively low-level and has perfect functions. Accordingly, it requires programmers to manage the l ...

Posted on Mon, 21 Oct 2019 19:03:12 -0700 by Zilvermeeuw

Algorithm - binary search algorithm (OC, Swift, Python)

Preface Binary search is a very common algorithm in the process of program development, and it is also the most frequently asked knowledge point in the process of exploring the algorithm knowledge point in the process of programmer interview; binary search is also often used in the actual development process; for example, we can find the larges ...

Posted on Fri, 18 Oct 2019 18:12:37 -0700 by madmax

The first E ABBA in 2019

Title Link: https://ac.nowcoder.com/acm/contest/881/E The main idea of the topic Ask how many strings of (n + m) A's and (n + m) B's can be divided into (n + m) subsequences of length 2, in which there are exactly n "AB" and M "BA". Analysis 1 (DP)    The code is as follows   Analysis 2 (broken line method of catt ...

Posted on Thu, 17 Oct 2019 11:53:58 -0700 by mingmangat

Several Key Points of Dart Class

First, do you want new or not? The first version of Dart instantiates objects that require the new keyword, but after Dart 2 the new keyword is removed. main(List<String> args) { // Call class name constructor Point point1 = new Point(3,4); // Equivalent to Point point 1 = Point (3,4); prin ...

Posted on Thu, 03 Oct 2019 20:33:28 -0700 by Riotblade

ios develops cocoa AsyncSocket and protobuf using swift 5 version, including sticky package and unpacking

Recently, I did some instant messaging. In order to cooperate with the use of the server (netty 4 + protobuf3), I played a trick on the ios client. protobuf is less used in ios client, less used with cocoa AsyncSocket and less swift version. In the swift version, there is almost no data for protobu ...

Posted on Thu, 08 Aug 2019 21:51:28 -0700 by rayden

Unity AR Foundation and CoreML: Implement hand detection and tracking

0x00 Preface Unity's AR Foundation Through the upper abstraction, the bottom interfaces of ARKit and ARCRore are encapsulated, thus enabling the cross-platform development capabilities of AR projects. Apple's CoreML is a framework for integrating machine learning models with app s on the iOS platform. This article, along with the demo projec ...

Posted on Wed, 24 Jul 2019 16:59:26 -0700 by julia k

iOS Cocoapods Creates its own Cocoapods Common Library Components

iOS Cocoapods Creates its own Cocoapods Common Library Components Registration of CocoaPods Account Information Creating a pod library follows these steps Registration of CocoaPods Account Information Open the terminal, create an open source pod library, need to register CocoaPods pod trunk regi ...

Posted on Tue, 23 Jul 2019 20:36:43 -0700 by Ralf Jones

Connection, Control, Data Transfer (Swift) between the iPhone and iWatch

Recently, in a project involving the transmission of data and the control of interface jump between the iPhone devices and watches, I searched a lot of information on the Internet, and found that the domestic websites were not introduced much, while the foreign websites were not very complete, so I am writing this blog here to give you a refere ...

Posted on Sun, 14 Jul 2019 14:52:01 -0700 by dmcentire

Shocked, you may not know the new features of Swift 3.1

Apple recently released Xcode 8.3 and a small version of Swift 3.1. But don't worry, Swift 3.1 and Swift 3 are compatible, which won't cause too much trouble for your Swift 3 project. Unfortunately, Xcode 8.3 ruthlessly removes support for Swift 2.3, so if your project is using pre-3.0 versions, I recommend that you don't rush to update it. fai ...

Posted on Sun, 07 Jul 2019 17:17:56 -0700 by AngelG107