Hacker News: maattdd

New comment by maattdd in "Toshifumi Suzuki, founder of Seven-Eleven Japan, has died"

maattdd — Tue, 26 May 2026 08:52:20 +0000

> not because pizzerias in Berlin or Warsaw

Well kinda actually. In countries with good culinary, even basic konbini food can be better than more "serious" restaurant in bad culinary countries.

New comment by maattdd in "Japan Team Successfully Test Engine for Mach 5 Aircraft, Eyeing 2HR Trip to US"

maattdd — Mon, 18 May 2026 08:38:40 +0000

Your conclusion is really a false dichotomy. The square of something very very small (close to zero) is negligeable : thus subortibal hop (Concorde was flying at 18km altitute for example).

New comment by maattdd in "PHP will get an AOT compiler from the Swoole team in 2027"

maattdd — Thu, 23 Apr 2026 07:39:50 +0000

I don't know much of PHP, but reaching "Rust/Go" performance is not simply because they have AOT compiler, but because the semantic of the language itself allows efficient compilation.

Many attempts has been made for an AOT compiler for Python and Ruby, but they don't reach those performance because of this.

New comment by maattdd in "LinkedIn uses 2.4 GB RAM across two tabs"

maattdd — Thu, 02 Apr 2026 08:21:44 +0000

Again, this is not by definition. This is by deduction.

New comment by maattdd in "LinkedIn uses 2.4 GB RAM across two tabs"

maattdd — Mon, 30 Mar 2026 13:45:09 +0000

This is not what "by definition" means.

New comment by maattdd in "I built a $5.99 alternative to CleanMyMac because I was tired of paying $40/yr"

maattdd — Tue, 24 Mar 2026 13:40:09 +0000

What about https://github.com/tw93/mole ?

New comment by maattdd in "The new Apple begins to emerge"

maattdd — Mon, 09 Mar 2026 15:01:39 +0000

https://www.cpu-monkey.com/en/compare_cpu-apple_a18-vs-apple...

New comment by maattdd in "Bugs Apple loves"

maattdd — Fri, 23 Jan 2026 08:13:03 +0000

I'm (and millions other people) are using macOS with a classic scroll wheel mouse perfectly fine. Are you sure there is not something messing with the trackpad at the same time ? (this looking erratically random?)

New comment by maattdd in "10x PostgreSQL performance boost on AWS RDS via ML-driven tuning"

maattdd — Wed, 14 Jan 2026 14:34:49 +0000

TLDR: DBtune identified and tuned key server parameters that seem to have had a large impact, including random_page_cost and max_wal_size

New comment by maattdd in "Claude Code gets native LSP support"

maattdd — Tue, 23 Dec 2025 14:27:18 +0000

Zed uses clangd, I don't think clangd support only 90% of C++ (and I don't think it avoid hard work).

New comment by maattdd in "Incomplete list of mistakes in the design of CSS"

maattdd — Thu, 11 Dec 2025 09:32:44 +0000

https://developer.mozilla.org/en-US/docs/Web/API/CSS_Object_...

New comment by maattdd in "In C++ modules globally unique module names seem to be unavoidable"

maattdd — Thu, 02 Oct 2025 18:17:23 +0000

export template extern still exists.

New comment by maattdd in "A polyglot's guide to multiple-dispatch (2016)"

maattdd — Thu, 11 Sep 2025 09:00:25 +0000

TIL that std::visit supports multiple variants. How new is that ?

New comment by maattdd in "Writing your own C++ standard library part 2"

maattdd — Mon, 02 Jun 2025 08:17:12 +0000

Obviously you can delete than iterate. He means delete while iterating.

New comment by maattdd in "Writing your own C++ standard library part 2"

maattdd — Mon, 02 Jun 2025 08:13:52 +0000

Examples of better design than abseil in a pure C++20 implementation

Show HN: A Discord/Slack bot to watch HN comments

maattdd — Fri, 21 Mar 2025 15:51:40 +0000

Some years ago, I discovered a bot called Little Birdie to watch HN comments for keywords and post a link to Slack. Unfortunately, it has disappeared and I've found myself missing this.

So this bot is a re-implementation of it, but now also supporting Discord.

It's very easy to use: 1. install the bot on your workspace/guild 2. /keywords add rust,hn,foobar (for Discord) ; @newsbutler add rust,hn,foobar (for Slack) 3. done

For technical stuff : it is implemented in Crystal + Postgres (hosted on Render+Neon). I will certainly opensource it when I clean the repo of all production secret.

I'm the only user currently, so it is certainly missing some basic optimizations to support HN crowd size. Please don't hug it to death.

Comments URL: https://news.ycombinator.com/item?id=43437111

Points: 5

# Comments: 0

New comment by maattdd in "Knowing CSS is mastery to front end development"

maattdd — Sun, 02 Mar 2025 22:47:29 +0000

Most of CSS is indeed statically typed (property have statically typed valid values). It's not true anymore when you introduce custom properties and IACVT though.

New comment by maattdd in "Ask HN: What are you working on? (February 2025)"

maattdd — Thu, 27 Feb 2025 05:36:59 +0000

It is working with both Slack and Discord already.

I was not aware of f5bot, but I got inspired by another bot called Little Birdie which doesn't exist anymore and it's basically just a re-implementation of it.

New comment by maattdd in "Ask HN: What are you working on? (February 2025)"

maattdd — Mon, 24 Feb 2025 15:40:25 +0000

I've been updating my HN bot (watch comments for keywords and post to Slack/Discord) written in Crystal to use raw SQL instead of unmaintained ORM.

Turns out the whole app needs only ~ 10 SQL requests, and it's way funier to write modern SQL than fighting the ORM.

The new code looks like this :

    db_message = Model.save_new_message!(@conf.db, DbButler::Hn, item, DbState::Processing)

Than I have a Model module with all the interactions with the DB

    def self.save_new_message!(db, butler, external_id, state) : Message
        sql = {{ read_file "./db/save_new_message.sql" }}
        db.query_one(sql, butler.to_s.downcase, external_id, state.to_s.downcase, as: Message)
   end

(thanks to Crystal ability to read a file at compile time - I can write raw SQL in a file with syntax highlithing and maybe typesafe if I connect the DB to the editor)

The land page is not ready, but the bot has been working for me for months https://newsbutler.xyz/

New comment by maattdd in "Rust Is Eating JavaScript (2023)"

maattdd — Sun, 16 Feb 2025 16:14:32 +0000

You can avoid this with custom allocator in C++ for example, you don't have to actually do memory work at synchronous time (aka in destructor)