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More States Are Taking Aim at a Controversial Early Reading Method

https://www.edweek.org/teaching-learning/more-states-are-taking-aim-at-a-controversial-early-read...
1•lelanthran•1m ago•0 comments

AI will not save developer productivity

https://www.infoworld.com/article/4125409/ai-will-not-save-developer-productivity.html
1•indentit•6m ago•0 comments

How I do and don't use agents

https://twitter.com/jessfraz/status/2019975917863661760
1•tosh•12m ago•0 comments

BTDUex Safe? The Back End Withdrawal Anomalies

1•aoijfoqfw•15m ago•0 comments

Show HN: Compile-Time Vibe Coding

https://github.com/Michael-JB/vibecode
2•michaelchicory•18m ago•0 comments

Show HN: Ensemble – macOS App to Manage Claude Code Skills, MCPs, and Claude.md

https://github.com/O0000-code/Ensemble
1•IO0oI•21m ago•1 comments

PR to support XMPP channels in OpenClaw

https://github.com/openclaw/openclaw/pull/9741
1•mickael•22m ago•0 comments

Twenty: A Modern Alternative to Salesforce

https://github.com/twentyhq/twenty
1•tosh•23m ago•0 comments

Raspberry Pi: More memory-driven price rises

https://www.raspberrypi.com/news/more-memory-driven-price-rises/
1•calcifer•29m ago•0 comments

Level Up Your Gaming

https://d4.h5go.life/
1•LinkLens•33m ago•1 comments

Di.day is a movement to encourage people to ditch Big Tech

https://itsfoss.com/news/di-day-celebration/
3•MilnerRoute•34m ago•0 comments

Show HN: AI generated personal affirmations playing when your phone is locked

https://MyAffirmations.Guru
4•alaserm•35m ago•3 comments

Show HN: GTM MCP Server- Let AI Manage Your Google Tag Manager Containers

https://github.com/paolobietolini/gtm-mcp-server
1•paolobietolini•36m ago•0 comments

Launch of X (Twitter) API Pay-per-Use Pricing

https://devcommunity.x.com/t/announcing-the-launch-of-x-api-pay-per-use-pricing/256476
1•thinkingemote•36m ago•0 comments

Facebook seemingly randomly bans tons of users

https://old.reddit.com/r/facebookdisabledme/
1•dirteater_•37m ago•1 comments

Global Bird Count Event

https://www.birdcount.org/
1•downboots•38m ago•0 comments

What Is Ruliology?

https://writings.stephenwolfram.com/2026/01/what-is-ruliology/
2•soheilpro•40m ago•0 comments

Jon Stewart – One of My Favorite People – What Now? with Trevor Noah Podcast [video]

https://www.youtube.com/watch?v=44uC12g9ZVk
2•consumer451•42m ago•0 comments

P2P crypto exchange development company

1•sonniya•56m ago•0 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
2•jesperordrup•1h ago•0 comments

Write for Your Readers Even If They Are Agents

https://commonsware.com/blog/2026/02/06/write-for-your-readers-even-if-they-are-agents.html
1•ingve•1h ago•0 comments

Knowledge-Creating LLMs

https://tecunningham.github.io/posts/2026-01-29-knowledge-creating-llms.html
1•salkahfi•1h ago•0 comments

Maple Mono: Smooth your coding flow

https://font.subf.dev/en/
1•signa11•1h ago•0 comments

Sid Meier's System for Real-Time Music Composition and Synthesis

https://patents.google.com/patent/US5496962A/en
1•GaryBluto•1h ago•1 comments

Show HN: Slop News – HN front page now, but it's all slop

https://dosaygo-studio.github.io/hn-front-page-2035/slop-news
7•keepamovin•1h ago•1 comments

Show HN: Empusa – Visual debugger to catch and resume AI agent retry loops

https://github.com/justin55afdfdsf5ds45f4ds5f45ds4/EmpusaAI
1•justinlord•1h ago•0 comments

Show HN: Bitcoin wallet on NXP SE050 secure element, Tor-only open source

https://github.com/0xdeadbeefnetwork/sigil-web
2•sickthecat•1h ago•1 comments

White House Explores Opening Antitrust Probe on Homebuilders

https://www.bloomberg.com/news/articles/2026-02-06/white-house-explores-opening-antitrust-probe-i...
1•petethomas•1h ago•0 comments

Show HN: MindDraft – AI task app with smart actions and auto expense tracking

https://minddraft.ai
2•imthepk•1h ago•0 comments

How do you estimate AI app development costs accurately?

1•insights123•1h ago•0 comments
Open in hackernews

How to draw lambda diagrams (2020)

https://risingentropy.com/how-to-draw-lambda-diagrams/
34•diginova•6mo ago

Comments

tomhow•6mo ago
I've temporarily buried this because it links to a tag index, with several articles, which is too broad/diverse to generate a good discussion on HN.

Submitter (diginova), please let us know which of the articles is the best to read and discuss and we'll make that the url and title.

(Best to email us at hn@ycombinator.com to be sure we get the message, as we might not remember to check back here).

diginova•6mo ago
True, thanks for clarification

that would be this one - https://risingentropy.com/how-to-draw-lambda-diagrams/ as I just started learning lambda calculus and this one helped

Also this is where I got the interest from - https://www.youtube.com/watch?v=RcVA8Nj6HEo

tromp•6mo ago
Lambda Diagrams originally appeared at [1].

[1] https://tromp.github.io/cl/diagrams.html

gowld•6mo ago
The submission page doesn't link to Tromp, but the YouTube videos do.

Tromp's page links to the submission:

> Paul Brauner has produced some awesome videos of beta reductions, produced with this software.

Also linked from Tromp, Cruz Godar's animated multi-colored calculator is my favorite:

https://cruzgodar.com/applets/lambda-calculus

acjohnson55•6mo ago
This might have made my theory of programming languages class a little easier. I wonder if it's helpful with the simply typed lambda calculus.