This note walks through building a simple local API server on Ubuntu and using core Linux tools like curl, jq, grep, and lsof to debug, inspect logs, and understand real backend workflows.

REST and GraphQL both help apps talk to backends, but they divide responsibility differently. This article compares their mental models, request shapes, Swift usage, tradeoffs, and when each approach

A SwiftUI demo showing Apple Image Playground as a native iOS creation flow.

FocusFlow is an iOS-only SwiftUI demo that simulates a real-time notification pipeline. It classifies mock notifications, ranks them against Focus context, summarizes low-priority updates, and exposes

A deep dive into supporting rich, expressive text (including Genmoji-like content) using NSTextView, NSAttributedString, and RTFD persistence.

This article explores how to properly support Genmoji in a SwiftUI app by treating user input as rich text rather than plain strings. By bridging UITextView into SwiftUI, enabling adaptive image glyph

Written on the 50th anniversary of Apple — a reflection on how one device sparked a lifelong passion for building software.

Emoji and stickers may seem simple, but delivering a smooth input experience requires careful optimization of event handling, rendering, and latency. This article explores how to design a high-perform

A very common iOS Developer interview question is to explain the difference between classes and structs

The delegate and protocal pattern is a one-to-one communication pattern in Swift that allows one view to communicate with another view.