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Master programming by recreating your favorite technologies from scratch.

Markdown 444,096 41,655 Updated Oct 10, 2025

RefakTS is a TypeScript refactoring tool built by AI coding agents for AI coding agents. It allows them to perform precise refactoring operations via command line instead of error prone text genera…

TypeScript 60 7 Updated Aug 17, 2025

This library provides a Result type for Typescript, allowing for better and safer error handling.

TypeScript 4 Updated Mar 1, 2024

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

Java 7,606 2,126 Updated Aug 20, 2024

A repo to hold my presentation for the Calgary Software Crafters on Functional Programming in C++20

TypeScript 4 1 Updated Dec 17, 2023

A collective list of free APIs

Python 381,516 40,621 Updated Nov 4, 2025

David Gamba's Toolbox

Go 27 3 Updated Nov 26, 2025

A single source of truth of all of my learning journey about topics regarding observability engineering and SRE

JavaScript 17 4 Updated Aug 2, 2022

Notes from "Effective Javascript" by David Herman

JavaScript 1 Updated Jun 12, 2019

A code kata in python to inspire software design thinking using object calisthenics

Python 1 1 Updated Mar 21, 2023

Spring boot library for continuous profiling with async-profiler

Java 33 5 Updated Dec 2, 2024

Notes and scripts for my JUG KA talk on Java profiling

Java 22 3 Updated Dec 6, 2022

Sampling CPU and HEAP profiler for Java featuring AsyncGetCallTrace + perf_events

C++ 8,671 945 Updated Nov 22, 2025

😎 A curated list of awesome functional programming stuff in js

6,031 395 Updated Nov 18, 2025

JUnit 5 extension for Kent Beck's test commit revert workflow.

Java 15 4 Updated Nov 25, 2025

Learn Domain-Driven Design, software architecture, design patterns, best practices. Code examples included

TypeScript 14,115 1,435 Updated Jun 11, 2024

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Python 327,893 53,451 Updated Nov 3, 2025

ThetaGang is an IBKR bot for collecting money

Python 2,363 328 Updated Nov 24, 2025

Track stocks, crypto, and derivatives prices and positions in real time from your terminal

Go 5,822 318 Updated Nov 17, 2025

Blizzards of the Coast Role Playing Game Kata

174 85 Updated Sep 28, 2020

🎆Interactive Online Platform that Visualizes Algorithms from Code

JavaScript 48,215 7,545 Updated Jun 9, 2024

Illustration of Kent Beck's Saff Squeeze method

Java 2 Updated Feb 24, 2022

A Java architecture test library, to specify and assert architecture rules in plain Java

Java 3,533 326 Updated Nov 27, 2025

Collection of Kata Descriptions

19 4 Updated Jan 19, 2022

Examples for O'Reilly & Associates Java Performance Tuning: The Definitive Guide

Java 693 325 Updated Jun 28, 2025

A comprehensive Domain-Driven Design example with problem space strategic analysis and various tactical patterns.

Java 5,473 796 Updated Jul 7, 2023

A Refactoring Golf exercise

Java 56 40 Updated May 6, 2024
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