Programming Language
TypeScript Basics #2: Basic Types
The basic types you will use every day — string, number, boolean, array, tuple, object, enum, any/unknown — all in one place.
Modern Python Basics #6: Errors and exception handling
The roles of try/except/else/finally, raise and user-defined exceptions, and the ExceptionGroup and except* introduced in 3.11.
TypeScript Basics #1: Getting Started and Setup
What TypeScript is, why you would use it, and how to compile and run your first piece of code — all in one go.
Modern Python Basics #5: Functions — argument patterns
Defaults, *args/**kwargs, positional-only(/), keyword-only(*) — every tool for writing function signatures expressively.
Modern Python Basics #4: Collections and comprehensions
The role of list/tuple/dict/set, plus comprehensions and generator expressions for building new collections in a single line.
Modern Python Basics #3: Control flow — if, while, for, match-case
Indentation-based blocks, range/enumerate/zip, and match-case pattern matching that has a different feel from switch.
Modern Python Basics #2: Variables, basic types, and type hints
Python is a dynamic language, but modern Python writes types from the start. int/str/bool/None and built-in generics, the int | None shortcut, and mypy/pyright.
Modern Python Basics #1: Getting Started and uv Setup
Why Python again — what changed in 3.14 since the 2017 tutorial, and building a first project with uv that replaces pip + venv + pyenv all at once.
JavaScript Practice #6 Build a Small App — Todo App
Build a Todo app from start to finish in vanilla JavaScript — DOM, event delegation, FormData, local storage, and a small store all in one place.
JavaScript Practice #5 Local Storage and Lightweight State Management
How to use localStorage / sessionStorage and their pitfalls, plus patterns for managing UI state cleanly without a library.
JavaScript Practice #4 Working with Forms
Form validation, working with FormData, and patterns at submit time — leveraging HTML built-in validation while augmenting with JavaScript.
JavaScript Practice #3 fetch and Async UI
Practical patterns for fetching data and reflecting it in the DOM — loading/error states, debouncing, and cancellation with AbortController.