From Swift Objects to SwiftUI, Part 2: Data Flow and Bindings
Give the pet model one source of truth, split the interface into focused child views, and follow each change through SwiftUI’s data flow.
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Articles, lessons, projects, and notes from across the site.
Pictures as Data: Binary, Hex, and Bit Masks
Move from OLED pixels to bytes, binary, hexadecimal, shifts, and masks—then practice the connections in an interactive byte-building game.
From Swift Objects to SwiftUI
Turn the object-type ideas from the previous Swift lesson into a small interface with composed views, buttons, modifiers, and local state.
Taiwan Mandarin Videos with Subtitles
A list of 326 Taiwan Mandarin videos with subtitles, collected in one place because YouTube restricts playlists for kids’ content.
Why I Recommend Alcumus for Math Practice
Why I recommend AoPS Alcumus as a free way to practice math and become a better problem solver.
Meet the OLED: Pixels, Coordinates, and show()
Use a Pico and SSD1306 OLED to learn I2C wiring, screen coordinates, drawing commands, and the frame buffer behind show().
Object Types: Building Things with State and Behavior
Build a small virtual-pet model while learning how Swift types hold state, define behavior, and create valid instances.
Brightening and Averaging Images with NumPy
A question-and-answer introduction to safe image arithmetic, vectorization, clipping, stacking, axes, and image averages with NumPy.
Intro to ML With Python
Get started with Python and Machine Learning with a fantastic, free, online coures.
Deadly Snowflakes: A Scratch Project
My Deadly Snowflakes game, plus beginner-friendly places to start with Scratch and WeScheme.
The Hungry Philosophers Problem
Cool puzzle related to synchronization issues in concurrent programming.