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Integrating Dodo Payments Licensing in macOS Apps
A practical Dodo Payments licensing flow for Swift macOS apps, covering activation, validation, deactivation, Hardware UUID binding, and Keychain storage.
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Integrating Sparkle 2 for Auto-Updates in macOS Apps
Adding auto-update functionality to a macOS application distributed outside the Mac App Store is essential. Sparkle has long been the gold standard...
Deep Dive into DNS: Architecture, Hijacks, and Timeouts
A practical deep dive into DNS resolution, local resolver behavior, DDNS hijacks, DNS amplification, and cloud DNS timeout troubleshooting.
Trading Basics: Stocks, Options, and Technical Analysis
Welcome to our beginner-friendly guide to understanding the stock market! If you’re looking to start your trading journey, it’s essential to unders...
Some ML Basic Concepts: Attention, Parallelism, and Architecture
In this post, we’ll dive into some fundamental and advanced concepts in modern Machine Learning, particularly focusing on Large Language Models (LL...
Construct the Rectangle
This problem is a typical use case of double pointer in an array. Like in a sorted array, find two elements who sum to a target number. This proble...
Pointer to pointer
For List related problem, we usually will not use the recursive way to solve it. For binary search tree, we might use it. In this blog, I just want...
Integer overflow
In the world of data types, each type has its own range. Overflow can happen when you do math on them. For example if you add one to the largest po...
CMake and Google benchmark
In this blog, I will introduce how we can make vim work with a CMake Project.
PyTorch slow inference
Our online systems support PyTorch inference. It is very slow recently. Previously there were not so many jobs running, so the CPU usage was low, b...