---
title: "I tried Lean and instantly got PhD in Math"
url: https://daily.dev/posts/i-tried-lean-and-instantly-got-phd-in-math-ps3iwn06z
source_url: https://www.youtube.com/watch?v=l9hUGoN6BLM
type: video:youtube
source: "Tsoding Daily"
published: 2026-02-02T12:00:20.898Z
updated: 2026-02-02T13:47:21.962Z
reading_time: 195
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# I tried Lean and instantly got PhD in Math

**[Tsoding Daily](https://daily.dev/sources/tsoding_daily)** · 195 min read · 0 upvotes · 0 comments

## Summary

Streamed Live on Twitch: https://twitch.tv/tsoding
Enable Subtitles for Twitch Chat

Chapters:
- 00:00:00 - Intro
- 00:01:37 - Installing Lean
- 00:39:48 - Editor support
- 00:45:54 - Hello World
- 00:52:00 - Programming in Lean
- 01:06:04 - Compiling to machine code
- 01:16:04 - Lakefile-s
- 01:18:31 - Break Yapping
- 01:29:53 - Raylib Speedrun starts - Being stuck
- 02:06:45 - Got unstuck
- 02:24:16 - Raylib Integration
- 02:38:10 - RAYLIB WINDOW ACHIEVED!!1
- 02:39:22 - Vendor Locking
- 02:50:22 - Break Yapping
- 02:59:04 - Footnote - Theorem Proving

References:
- Lean Lang: https://lean-lang.org/
- What is IO monad? https://www.youtube.com/watch?v=fCoQb-zqYDI

Topic: Checking out Lean Programming Language

Support:
- https://github.com/tsoding/donate#support-tsoding

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.youtube.com/watch?v=l9hUGoN6BLM>

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