Hacker News: 0xjnml

New comment by 0xjnml in "Show HN: Gova – The declarative GUI framework for Go"

0xjnml — Sat, 25 Apr 2026 13:52:21 +0000

Shameless plug: https://pkg.go.dev/modernc.org/tk9.0

New comment by 0xjnml in "[dead]"

0xjnml — Fri, 27 Mar 2026 09:06:38 +0000

The results for the 26.03 benchmark run are in. (golang)

With the recent release of ncruces' drive switching from wazero to wasm2go, there have been expectations of possibly substantial improvements. Our numbers confirm this: the wasm2go-based driver (ncruces) has recovered significant ground compared to the February results, narrowing the gap with its competitors. The driver erased its worse performance on targets not natively supported by wazero. Well done, u/ncruces!

New comment by 0xjnml in "[dead]"

0xjnml — Tue, 17 Mar 2026 13:55:29 +0000

CGo-free as always. See CHANGELOG.md for details.

https://gitlab.com/cznic/sqlite/-/blob/master/CHANGELOG.md

New comment by 0xjnml in "Defer available in gcc and clang"

0xjnml — Fri, 20 Feb 2026 12:17:41 +0000

> I wonder what the thought process of the Go designers was when coming up with that approach.

Sometimes we need block scoped cleanup, other times we need the function one.

You can turn the function scoped defer into a block scoped defer in a function literal.

AFAICT, you cannot turn a block scoped defer into the function one.

So I think the choice was obvious - go with the more general(izable) variant. Picking the alternative, which can do only half of the job, would be IMO a mistake.

New comment by 0xjnml in "[dead]"

0xjnml — Fri, 30 Jan 2026 19:16:08 +0000

I wrote a post exploring egg, a new tool that generates recursive descent parsers from Go-style EBNF. The most interesting feature is that it doesn't generate struct nodes; it encodes the AST into a flat []int32 slice for cache locality and reduced GC pressure. I included a walkthrough of generating a JSON parser with it.

New comment by 0xjnml in "The coming industrialisation of exploit generation with LLMs"

0xjnml — Wed, 21 Jan 2026 11:41:30 +0000

See https://pkg.go.dev/modernc.org/quickjs

New comment by 0xjnml in "Golang's big miss on memory arenas"

0xjnml — Thu, 11 Dec 2025 12:18:07 +0000

> If you really want an arena like behavior you could allocate a byte slice and use unsafe to cast it to literally any type.

Only if the type is not a pointer per se or does not contain any inner pointers.

Otherwise the garbage collector will bite you hard.

New comment by 0xjnml in "The Green Tea Garbage Collector"

0xjnml — Thu, 30 Oct 2025 16:31:44 +0000

YouTube is one such.

New comment by 0xjnml in "Qbecc – QBE based C compiler"

0xjnml — Tue, 21 Oct 2025 09:46:10 +0000

Documentation for the QBE IL is here: https://c9x.me/compile/doc/il.html

I find it quite usable.

New comment by 0xjnml in "Qbecc – QBE based C compiler"

0xjnml — Fri, 03 Oct 2025 14:06:07 +0000

Maintainer here, AMA.

Show HN: Qbecc is a C compiler producing Go(Golang) ABI0 assembler

0xjnml — Thu, 02 Oct 2025 16:06:30 +0000

The resulting assembler code runs on standard Go movable stacks. This is another way how to avoid the cost of CGo Go<->C context switch. However, as no silver bullets exist, the cost of running on movable stacks is not gone in full. It have shifted to the additional handling of goroutine-local allocations for addressable local variables.

The purpose of this experiment is to compare the modernc.org/ccgo/v4 and qbecc approaches with respect to resulting performance differences, if any.

The proof of concept has reached v0.1.0.

Comments URL: https://news.ycombinator.com/item?id=45451531

Points: 1

# Comments: 0

New comment by 0xjnml in "New email protocol for user-triggered email forwarding (anti-SCAM)"

0xjnml — Sat, 30 Aug 2025 14:12:35 +0000

You took the wrong exit, sir. This is the right way: https://en.wikipedia.org/wiki/Request_for_Comments

New comment by 0xjnml in "Comparing Golang SQLite to C SQLite"

0xjnml — Sat, 21 Jun 2025 13:52:37 +0000

> The page you linked compares golang bindings against each other, not C against golang like my test did

No one disputed that. But it follows that your benchmarks are comparing C to [some very] outdated versions of Go packages. Which is what I tried to point out.

New comment by 0xjnml in "Comparing Golang SQLite to C SQLite"

0xjnml — Fri, 20 Jun 2025 10:49:02 +0000

It seems you're using some old Go package versions for your benchmarks.

See https://pkg.go.dev/modernc.org/sqlite-bench#readme-tl-dr-sco... for the numbers using the more recent versions.

New comment by 0xjnml in "Show HN: Pure Go QuickJS JavaScript engine (Golang)"

0xjnml — Tue, 13 May 2025 08:23:24 +0000

It is transpiled from C to Go, meaning 90+% of the effort is mechanized.

Ad performance. In some micro benchmarks the Go version is ~4x slower: https://gitlab.com/cznic/libquickjs/-/blob/675ee343753c42341...

However, it's already ~25% faster, in a different benchmark, than another Go JS VM written from scratch: https://pkg.go.dev/modernc.org/quickjs@v0.14.0#hdr-Performan...

I am currently looking around if it can be improved more and there are some ideas to try out.

Show HN: Pure Go QuickJS JavaScript engine (Golang)

0xjnml — Mon, 12 May 2025 12:43:42 +0000

Package quickjs is a pure Go embeddable Javascript engine. It supports the ECMA script 14 (ES2023) specification including modules, asynchronous generators, proxies and BigInt.

Comments URL: https://news.ycombinator.com/item?id=43962304

Points: 5

# Comments: 3

New comment by 0xjnml in "Layered Design in Go"

0xjnml — Tue, 22 Apr 2025 11:34:12 +0000

go.mod files have no dependencies, so neither they can have circular dependencies.

go.mod files just list the dependencies of their respective package.

Show HN: The SQLite Drivers 25.04 Benchmarks Game (Golang)

0xjnml — Fri, 04 Apr 2025 11:49:22 +0000

Changes since 25.03 (https://pkg.go.dev/modernc.org/sqlite-bench@v1.0.0#readme-tl...)

- No changes in ranking.

- Scorecard changes:

    - modernc: -3 points
    - mattn: -7 points
    - ncruces: +10 points

Hacker News: 0xjnml

New comment by 0xjnml in "Show HN: Gova – The declarative GUI framework for Go"

New comment by 0xjnml in "[dead]"

New comment by 0xjnml in "[dead]"

New comment by 0xjnml in "Defer available in gcc and clang"

New comment by 0xjnml in "[dead]"

New comment by 0xjnml in "The coming industrialisation of exploit generation with LLMs"

New comment by 0xjnml in "Golang's big miss on memory arenas"

New comment by 0xjnml in "The Green Tea Garbage Collector"

New comment by 0xjnml in "Qbecc – QBE based C compiler"

New comment by 0xjnml in "Qbecc – QBE based C compiler"

Show HN: Qbecc is a C compiler producing Go(Golang) ABI0 assembler

New comment by 0xjnml in "New email protocol for user-triggered email forwarding (anti-SCAM)"

New comment by 0xjnml in "Comparing Golang SQLite to C SQLite"

New comment by 0xjnml in "Comparing Golang SQLite to C SQLite"

New comment by 0xjnml in "Show HN: Pure Go QuickJS JavaScript engine (Golang)"

Show HN: Pure Go QuickJS JavaScript engine (Golang)

New comment by 0xjnml in "Layered Design in Go"

Show HN: The SQLite Drivers 25.04 Benchmarks Game (Golang)

The SQLite Drivers 25.03 Benchmarks Game (Golang)

Go Is DOOMed