99 lines
3.7 KiB
Markdown
99 lines
3.7 KiB
Markdown
---
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title: codecrafters-io/build-your-own-x:Master programming by recreating your favorite technologies from scratch.
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source: https://github.com/codecrafters-io/build-your-own-x?tab=readme-ov-file#build-your-own-insert-technology-here
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author: shenwei
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published:
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created: 2026-01-01
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description: Master programming by recreating our favorite technologies from scratch.
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tags: [build-your-own-x, byox, codecrafters, github]
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---
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# codecrafters-io/build-your-own-x
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## Source File
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- [[raw/AI/codecrafters-iobuild-your-own-x Master programming by recreating your favorite technologies from scratch.md]]
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## Overview
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**[build-your-own-x](https://github.com/codecrafters-io/build-your-own-x)** is a compilation of well-written, step-by-step guides for recreating our favorite technologies from scratch.
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> *What I cannot create, I do not understand — Richard Feynman.*
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## Core Philosophy
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The fundamental principle behind this project is that **learning by creating is the most effective way to truly understand a technology**. Instead of just consuming knowledge passively, practitioners rebuild complex systems from scratch, gaining deep insight into how they work internally.
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## Technology Categories
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This repository covers **26 major technology domains**:
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- [[3D Renderer]]
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- [[Augmented Reality]]
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- [[BitTorrent Client]]
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- [[Blockchain / Cryptocurrency]]
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- [[Bot]] Development
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- [[Command-Line Tool]]s
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- [[Database]]
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- [[Docker]]
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- [[Emulator / Virtual Machine]]
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- [[Front-end Framework / Library]]
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- [[Game]] Development
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- [[Git]]
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- [[Network Stack]]
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- [[Neural Network]]
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- [[Operating System]]
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- [[Physics Engine]]
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- [[Programming Language]]
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- [[Regex Engine]]
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- [[Search Engine]]
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- [[Shell]]
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- [[Template Engine]]
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- [[Text Editor]]
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- [[Visual Recognition System]]
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- [[Voxel Engine]]
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- [[Web Browser]]
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- [[Web Server]]
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## Related Concepts
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- [[Byox]] - The methodology of learning programming by rebuilding technologies from scratch
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- [[Learn In Public]] - Sharing learning progress publicly
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- [[CodeCrafters]] - The platform that maintains this repository and provides interactive challenges
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## Notable Tutorials
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### Programming Languages
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- [Crafting Interpreters](http://www.craftinginterpreters.com/) - Java implementation
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- [Write Yourself a Scheme in 48 Hours](https://en.wikibooks.org/wiki/Write_Yourself_a_Scheme_in_48_Hours) - Haskell
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- [Build Your Own Lisp](http://www.buildyourownlisp.com/) - C in 1000 lines
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- [Make a Lisp (mal)](https://github.com/kanaka/mal) - Implementations in any language
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### Operating Systems
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- [Linux from Scratch](https://linuxfromscratch.org/lfs)
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- [Writing an OS in Rust](https://os.phil-opp.com/)
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- [Operating Systems: From 0 to 1](https://tuhdo.github.io/os01/)
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- [The little book about OS development](https://littleosbook.github.io/)
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### Databases
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- [Let's Build a Simple Database](https://cstack.github.io/db_tutorial/) - C
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- [Build Your Own Redis from Scratch](https://build-your-own.org/redis) - C++
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- [Build Your Own Database from Scratch](https://build-your-own.org/database/) - Go
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### Web Technologies
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- [Let's Build a Web Server](https://ruslanspivak.com/lsbaws-part1/) - Python
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- [Browser Engineering](https://browser.engineering/) - Python
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- [Let's build a browser engine](https://limpet.net/mbrubeck/2014/08/08/toy-layout-engine-1.html) - Rust
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### Git
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- [Gitlet](http://gitlet.maryrosecook.com/docs/gitlet.html) - JavaScript
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- [Write yourself a Git!](https://wyag.thb.lt/) - Python
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- [ugit: Learn Git Internals](https://www.leshenko.net/p/ugit/) - Python
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## Contributing
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Contributions are welcome! Submit a PR or [create an issue](https://github.com/codecrafters-io/build-your-own-x/issues/new) to add new tutorials.
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## Resources
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- [CodeCrafters](https://codecrafters.io/) - Interactive challenges based on this repository
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