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How to shoot yourself in the foot – 2026 edition

https://github.com/aweussom/HowToShootYourselfInTheFoot
1•aweussom•42s ago•0 comments

Eight More Months of Agents

https://crawshaw.io/blog/eight-more-months-of-agents
1•archb•2m ago•0 comments

From Human Thought to Machine Coordination

https://www.psychologytoday.com/us/blog/the-digital-self/202602/from-human-thought-to-machine-coo...
1•walterbell•3m ago•0 comments

The new X API pricing must be a joke

https://developer.x.com/
1•danver0•3m ago•0 comments

Show HN: RMA Dashboard fast SAST results for monorepos (SARIF and triage)

https://rma-dashboard.bukhari-kibuka7.workers.dev/
1•bumahkib7•4m ago•0 comments

Show HN: Source code graphRAG for Java/Kotlin development based on jQAssistant

https://github.com/2015xli/jqassistant-graph-rag
1•artigent•9m ago•0 comments

Python Only Has One Real Competitor

https://mccue.dev/pages/2-6-26-python-competitor
2•dragandj•10m ago•0 comments

Tmux to Zellij (and Back)

https://www.mauriciopoppe.com/notes/tmux-to-zellij/
1•maurizzzio•11m ago•1 comments

Ask HN: How are you using specialized agents to accelerate your work?

1•otterley•12m ago•0 comments

Passing user_id through 6 services? OTel Baggage fixes this

https://signoz.io/blog/otel-baggage/
1•pranay01•13m ago•0 comments

DavMail Pop/IMAP/SMTP/Caldav/Carddav/LDAP Exchange Gateway

https://davmail.sourceforge.net/
1•todsacerdoti•14m ago•0 comments

Visual data modelling in the browser (open source)

https://github.com/sqlmodel/sqlmodel
1•Sean766•16m ago•0 comments

Show HN: Tharos – CLI to find and autofix security bugs using local LLMs

https://github.com/chinonsochikelue/tharos
1•fluantix•16m ago•0 comments

Oddly Simple GUI Programs

https://simonsafar.com/2024/win32_lights/
1•MaximilianEmel•17m ago•0 comments

The New Playbook for Leaders [pdf]

https://www.ibli.com/IBLI%20OnePagers%20The%20Plays%20Summarized.pdf
1•mooreds•17m ago•0 comments

Interactive Unboxing of J Dilla's Donuts

https://donuts20.vercel.app
1•sngahane•18m ago•0 comments

OneCourt helps blind and low-vision fans to track Super Bowl live

https://www.dezeen.com/2026/02/06/onecourt-tactile-device-super-bowl-blind-low-vision-fans/
1•gaws•20m ago•0 comments

Rudolf Vrba

https://en.wikipedia.org/wiki/Rudolf_Vrba
1•mooreds•21m ago•0 comments

Autism Incidence in Girls and Boys May Be Nearly Equal, Study Suggests

https://www.medpagetoday.com/neurology/autism/119747
1•paulpauper•22m ago•0 comments

Wellness Hotels Discovery Application

https://aurio.place/
1•cherrylinedev•22m ago•1 comments

NASA delays moon rocket launch by a month after fuel leaks during test

https://www.theguardian.com/science/2026/feb/03/nasa-delays-moon-rocket-launch-month-fuel-leaks-a...
1•mooreds•23m ago•0 comments

Sebastian Galiani on the Marginal Revolution

https://marginalrevolution.com/marginalrevolution/2026/02/sebastian-galiani-on-the-marginal-revol...
2•paulpauper•26m ago•0 comments

Ask HN: Are we at the point where software can improve itself?

1•ManuelKiessling•26m ago•1 comments

Binance Gives Trump Family's Crypto Firm a Leg Up

https://www.nytimes.com/2026/02/07/business/binance-trump-crypto.html
1•paulpauper•27m ago•1 comments

Reverse engineering Chinese 'shit-program' for absolute glory: R/ClaudeCode

https://old.reddit.com/r/ClaudeCode/comments/1qy5l0n/reverse_engineering_chinese_shitprogram_for/
1•edward•27m ago•0 comments

Indian Culture

https://indianculture.gov.in/
1•saikatsg•30m ago•0 comments

Show HN: Maravel-Framework 10.61 prevents circular dependency

https://marius-ciclistu.medium.com/maravel-framework-10-61-0-prevents-circular-dependency-cdb5d25...
1•marius-ciclistu•30m ago•0 comments

The age of a treacherous, falling dollar

https://www.economist.com/leaders/2026/02/05/the-age-of-a-treacherous-falling-dollar
2•stopbulying•30m ago•0 comments

Ask HN: AI Generated Diagrams

1•voidhorse•33m ago•0 comments

Microsoft Account bugs locked me out of Notepad – are Thin Clients ruining PCs?

https://www.windowscentral.com/microsoft/windows-11/windows-locked-me-out-of-notepad-is-the-thin-...
8•josephcsible•33m ago•3 comments
Open in hackernews

Ask HN: Are LLMs good for implementing features in existing web apps?

2•endorphine•6mo ago
So I have a typical medium-sized Rails codebase, but with significant code that's not the dead simple CRUD stuff. For example, it talks with third-party APIs, does user authentication, uses Postgres FTS plus some other things.

I'm bored to work on it lately, and I was thinking whether using an LLM I could implement new features for it.

Are any of the current models at this point yet? I guess it should need to have a big context so that it reads all the views/controllers/models.

If so, which tool would you use? Something like Codex or Claude Code?

Comments

saadn92•6mo ago
I recommend Claude Code or Cursor, they’re usually the best right now. If you implement new features, be very specific. The more vague you are, the more it’ll just implement whatever it wants. Be wary, it also ends up breaking stuff sometimes, which can be annoying. But it does pretty well with Rails imo