Posts

Autonomous driving looks cool — but you wouldn't really want to close your eyes and ride along. Vibe coding is different. It looks cool too, and if things go si…

Running Claude Code from My iPhone Using Tailscale + SSH If you want to use Claude Code on your Mac from your phone, you really only need one thing: Tailscale +…

Lately, I’ve been thinking about something: With AI, almost any technical question can get a decent answer in seconds. So why would I still spend time writing…

One thing I have always disliked in my career as a developer is reading other people's code -- especially when a unfamiliar codebase lands on my desk. If there …

1. Create a local "tap" - which I assume is something like a local brew repository 2. Extract the desired version of the package into this local tap 3. Install …

About V2Ray Project V is a set of tools that can help you build your own dedicated base communication network. The core tool of Project V is called V2Ray, which…

copy and mutableCopy Conclusions first, then code. - copy: For a mutable object, calling returns a new immutable object, while the retain count of the original…

Overview iOS localization mainly involves the following areas: 1. Localization of properties in InfoPlist. 2. Storyboard/xib localization. 3. String localizatio…

Original article: http://dev.iachieved.it/iachievedit/notifications-and-userinfo-with-swift-3-0/ Original author: Joe <!--Body starts here-- Notifications and u…

Original article: http://machinethink.net/blog/apple-deep-learning-bnns-versus-metal-cnn/ Original author: MATTHIJS HOLLEMANS <!--Body starts here-- Apple's Dee…

The Traditional Chinese translation of the ethereum wiki is not very readable — I might as well read the original English and translate it myself. Original arti…

Clone the source code from the project repository. Directory Structure accounts Implements a high-level Ethereum account management system bmt …

Geth Geth is a concrete implementation of the Ethereum protocol. Through Geth, you can implement various Ethereum features, such as creating, editing, and delet…

bitcoin - repository - white paper ethereum - repository - white paper eos - repository - white paper

In order to better study socialist core values and achieve the great rejuvenation of the Chinese nation's dream, various skills for bypassing internet censorshi…

Introduction Discussion of Bitcoin's Limitations 1. Trade-offs between scalability and decentralization. For example, larger blocks can support higher trans…

What is Ethereum? Ethereum is a platform that uses blockchain technology to build decentralized applications (Dapps). Rather than giving users a set of predefin…

A Blockchain 101 for beginners. A VPN may be required to access the videos. Part one explains blockchain and the append-only ledger concept through video and in…

For easy reference, I have compiled the Chinese translation of Mastering Bitcoin. Non-technical content has been omitted. Links in parentheses point to the corr…

These are notes from the Coursera course Bitcoin and Cryptocurrency Technologies. 4.1 Simple Local Storage To spend a Bitcoin, you need some public information …

These are notes from the Coursera course Bitcoin and Cryptocurrency Technologies. Bitcoin's consensus mechanism guarantees: - An append-only ledger. - A decentr…

These are notes from the Coursera course Bitcoin and Cryptocurrency Technologies. 2.1 Centralization vs. Decentralization Decentralization does not mean "nothin…

These are notes from the Coursera course Bitcoin and Cryptocurrency Technologies. 1.1 Cryptographic Hash Functions Three General Properties of Hash Functions: -…

GitHub Warning When viewing the blog repository, GitHub showed a warning — clearly indicating that a dependency needed updating: So I ran the updates: Installa…

has a delegate property typed as : overrides this property, but uses instead: However, when you try to override the delegate with a custom protocol in the sa…

As mentioned before, using dynamic proxies is an effective way to prevent your scraper from getting banned. But when you actually dig into it, you'll run into q…

Hard to categorize, so it ended up under "Programming Concepts" — you know how it is. Integrating Scrapy with Tor is yet another rabbit hole. Installation Tor (…

Most websites employ varying degrees of anti-scraping mechanisms. To collect more data, you need to adopt corresponding countermeasures. Disable ROBOTSTXTOBEY I…

This post covers the most common techniques for debugging spiders. Consider the following code: This is a spider that crawls two pages. It also crawls a detail …

Podfile A Podfile describes the dependencies of one or more Xcode project targets. A Podfile can be very simple: Or more complex: Global Settings Global configu…

The main limitation of Swift Extensions is that stored properties cannot be added directly. However, there are alternative approaches to achieve this. Backgroun…

Table of Contents - What is SwiftFormat? - Why would I want to use SwiftFormat? - Usage Guide - Command Line Tool - Xcode Source Editor Extension - …

Introduction This post uses Scrapy to build a sample web scraper. Installation of Scrapy is omitted here — installing via pip is straightforward. Creating a Pro…

Introduction When it comes to Python practice projects, web scraping is probably the most popular choice. Libraries like Requests and BeautifulSoup feel a bit l…

Core ML lets you integrate a broad variety of machine learning model types into your app. In addition to supporting extensive deep learning with over 30 layer t…

Core Classes Overview ARAnchor ARAnchor represents the position and orientation of an object in 3D space. It is commonly referred to as a 3D anchor point for an…

Introduction to ARKit Augmented Reality (AR) is a technology that computes the position and orientation of a camera in real time and overlays corresponding imag…

Introduction In the previous post I covered some background knowledge on circumventing the GFW. This post will first introduce NetworkExtension and related open…

Introduction My technical skills are fairly limited, and most of the time I rely on Google to solve the programming problems I encounter. After the National Day…

Introduction It has been a long time since my last update. In the meantime, I did some translation work for the SwiftGG team — feel free to check it out here. O…

I previously wrote about how to create a custom CocoaPods repository. Now I've run into a new problem: how do you prevent users from importing header files they…

Introduction Does using React Native mean you have to rewrite your entire project from scratch? There are plenty of tutorials out there, but very few explain ho…

Introduction Hard to believe it's already 2017 the next time I sit down to write something. The Problem I started looking into React Native, and the HelloWorld …

Introduction This is probably the last post before the next intermission. The project needed an image picker control, so I found a Swift project, spent two days…

Adapter Pattern Adapter Pattern: Converts the interface of a class into another interface that clients expect. The Adapter pattern lets classes work together th…

Singleton Pattern Singleton Pattern: Ensures a class has only one instance and provides a global access point to it. The Singleton is probably the simplest form…

Builder Pattern Builder Pattern: Separates the construction of a complex object from its representation, so that the same construction process can create differ…

Introduction I was logging delegate method calls to observe the call order, only to find my console flooded with completely unrelated log messages. I couldn't …

This article covers only scrolling-related content. Key UIScrollView Properties - : Returns YES when the user has touched but has not yet started dragging. - : …

The Factory pattern comes in two main variants: the Simple Factory and the Abstract Factory. The Factory Method is a component of the Abstract Factory pattern. …

Introduction I used to lead a small iOS team, spending my days dealing with endless inter-team friction while also serving as the lead developer writing code. I…

GCD A key concept in GCD is the queue. The core idea: break a long-running task into multiple units of work and add those units to a . The system manages these …

The Problem When multiple threads access the same object's data simultaneously, thread safety issues arise. For example: Solutions The most common solution to t…

Introduction I'd heard of zombie objects before, but only had a vague understanding — something like memory that hasn't been referenced but also hasn't been ove…

Introduction During a recent project upgrade, I used Instruments to investigate memory leaks. The results were quite revealing, so I'm documenting the process h…

The Situation I upgraded the MBPR at home to OS X 10.11, and a few apps stopped working. Software DRM in China is quite effective it seems — had to Google "XXX …

Introduction I came across this question in a conversation: when storing thousands of objects in a dictionary (NSDictionary in Objective-C), what could cause pe…

Background JSPatch is becoming increasingly widespread. Let me document the integration and usage process. Since the company hasn't set up a dedicated API for f…

A singleton object ensures that no matter how many times you create or retrieve an instance of a class, you always get the same object. Whether dealing with aud…

Background Today was a rough day. Keep moving forward. Back to mixed-language development. Don't think that just because you're familiar with OC and UIKit, skim…

Background CocoaPods is a pretty solid dependency manager for third-party frameworks. The one painful part is how slow can be. Using offline mode () helps spee…

Background First, a quick rant: the company has recently taken on several outsourced projects with similar functionality, and I've been grinding through them da…

Background I ran into the error while debugging on an iOS 9.3 device. I've encountered this problem every time after upgrading iOS, but never documented it. He…

Properties DataSource Methods Execution order: Calculate number of sections -Calculate rows per section -Generate section index -Generate cells (all cells in al…

Background We suddenly had a large number of new projects coming in, and the Jenkins setup and deployment scripts I maintain needed significant changes — one of…

Breakpoints Beyond the standard breakpoints, you can also set Exception Breakpoints and Symbolic Breakpoints. Use to jump to the breakpoint manager, then click…

Installation Install Install Configuration After installation, copy the following line into your file. If the file doesn't exist, create it. Make sure to rep…

I had always been using to qualify UIView properties in view controllers, but later noticed that some code does use for the same purpose. In fact, when I trie…

Introduction I recently encountered a scenario involving loading local resource files. Retrieving resources from the sandbox is fairly straightforward, but acce…

My Code Snippet I have to admit I'm a fairly lazy person — I don't want to type the same code a third time, so I automate as much as possible. With that in mind…

ReactiveCocoa Operation Prerequisites All signals () can be processed with operation methods, because all operation methods are defined in . Any class that inhe…

Common Usage As mentioned earlier, RAC can replace delegates, KVO, and more. Let's look at the specific usage. Replacing Delegates: - : Used to replace delegate…

Introduction A colleague came over to review my code and sighed, "Your screen is completely taken up by navigation bars, toolbars, and the debug area — doesn't …

Whether dealing with collection objects or non-collection objects, when they receive and messages, the following rules apply: - returns an object. Therefore…

Some features in native app development are well-suited for a Hybrid approach. I have long wanted to try , but since neither the front-end nor the Android team …

Introduction I recently encountered a complex view hierarchy: a root controller containing two child controllers (top and bottom), each implementing a PageView-…

Overview of ReactiveCocoa ReactiveCocoa is inspired by functional reactive programming. Rather than using mutable variables which are replaced and modified in-p…

Introduction I've gone through Swift twice now, but the syntax still slips away, which means I haven't been practicing enough. To help myself get back into the …

Switching to the engine I received an email from saying that starting March 1st, only the engine would be supported, and code highlighting would need to swit…

The Spring Festival holiday is three days away and I can't focus on studying RAC, so I'll use this spare time to organize some notes. Here's a quick rundown of …

Introduction Functional programming philosophy: write operations as a series of nested function or method calls whenever possible. Characteristics of functional…

Introduction In reactive programming, you don't need to think about the order of operations — you only need to care about the result. It's like the butterfly ef…

Introduction I have been using Masonry for a while and became quite interested in its chainable programming style, so I took some time to look at how it is impl…

Introduction I originally intended to write a quick summary of Block memory management, but the topic turned out to be a much deeper rabbit hole than expected. …

Introduction Recently I revisited C language memory mechanisms and deepened my understanding of the four-segment memory model. Looking back at iOS memory manage…

is a technique for changing the actual implementation of a selector at runtime. Using this technique, we can modify the implementation of a method by changing t…

Dictionary to Model Output: Associated Objects Let's jump straight to the code: Output: Code All code from this article can be found on my GitHub .

Basic Data Types SEL , also called a selector, is a pointer representing a method's selector, defined as: The detailed definition of the struct is not found in…

Class and Object Operation Functions Class Operation Functions The methods that provides for operating on classes are mostly targeted at the various fields of …

Type Encoding As a supplement to the Runtime, the compiler encodes the return type and parameter types of each method into a string and associates it with the m…

Introduction : refers to the state of a program while it is running (or being executed). In other words, when you open a program and it runs on your computer, t…

Introduction In , is the root class for most classes. It has an property of type . What is ? And what is ? isa The definition of in : is a pointer to an st…

The following interaction approach was used to achieve a unified interface with Android. Background: Those familiar with Android's will know that in Android yo…

JavaScript can define objects entirely with JSON without any prototype-based inheritance, but Objective-C code can't exist without classes and inheritance. That…

Introduction My recent project involves Hybrid development, requiring interaction between JavaScript and Objective-C code. Since the JS interface was already in…

Introduction If you just want to quickly set up a static site and don't have time to study syntax right now, I recommend directly forking my repository. For t…

During the Spring Festival holiday I had nothing to do, and on a whim I signed up for a domain. After cooling down, I figured since I'd already paid for it, I …