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Significant features introduced for recent versions of Perl
History of Perl releases since version 5.6, each with a summary of added or changed features.
New
The latest blog posts to take off on Hacker News. 1,535 posts.
1382
Well-Known Secrets of AmigaDOS
In keeping with the Commodore tradition of cost cutting, most consumer models of their Amiga line of computers came with severely watered down documentation. The Amiga 500 was an exception from this rule, but owners of later machines - such as the A1200 - may not have gotten any documentation for the command line part…
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Khronos Releases AV1 Decode in Vulkan Video with SDK Support for H.264/H.265
The Vulkan Working Group at Khronos has developed a set of video format decode and encode extensions, collectively referred to as Vulkan Video. Today, with the release of Vulkan 1.3.277, the Working Group is proud to announce the new Decode AV1 video extension. Similar to the Vulkan project in its goals, AV1 is a…
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The web just gets better with Interop 2024
The web is amazing.
1385
Solving SAT via Positive Supercompilation
The boolean satisfiability problem (“SAT” for short) is arguably the most famous NP-complete problem in theoretical computer science. According to Wikipedia, it is “the problem of determining if there exists an interpretation that satisfies a given Boolean formula ”; or, in simpler terms, if there is at least one…
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My favourite Git commit (2019)
I like Git commit messages. Used well, I think they’re one of the most powerful tools available to document a codebase over its lifetime. I’d like to illustrate that by showing you my favourite ever Git commit.
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Compiling a Lisp (2020)
Overture to our small Lisp to x86-64 compiler
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Making a PDF that's larger than Germany
We’re gonna need a bigger printer.
1389
Differ: Tool for testing and validating transformed programs
We recently released a new differential testing tool, called DIFFER, for finding bugs and soundness violations in transformed programs. DIFFER combines elements from differential, regression, and fuzz testing to help users find bugs in programs that have been altered by software rewriting, debloating, and hardening…
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Macaroons Escalated Quickly
Documentation and guides from the team at Fly.io.
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The C bounded model checker: criminally underused
Follow along on a google colab: https://colab.research.google.com/github/philzook58/philzook58.github.io/blob/master/pynb/cbmc_tut.ipynb
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I just wanted Emacs to look nice – Using 24-bit color in terminals
Thanks to some coworkers and David Wilson’s Emacs from Scratch playlist, I’ve been getting back into Emacs. The community is more vibrant than the last time I looked, and LSP brings modern completion and inline type checking.
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Building a USB to Mac ADB keyboard adapter
Write-only blogging
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Build a simple LSM-Tree storage engine in a week
A hands-on introduction to database internals. Build an LSM storage engine with SSTables, compaction, WAL recovery, MVCC, and transactions.
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Boring Python: dependency management (2022)
*This post has been significantly updated since it was originally written. The most recent update was in September 2026; a …
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A Tour of the Lisps
2023 seems to have been the year where I "made the rounds" of a number of major Lisps. There were several elements that lead to this. Firstly must have been my exposure to Elixir in 2022, which introduced me to the idea of debugging live systems and "staying in your program". Secondly must have been my chief complaint…
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What I talk about when I talk about query optimizer (part 1): IR design
Achieving Data Freedom Through Open Source and Rust
1399
Adding type safety to object IDs in TypeScript
Learn how to add type safety to object IDs in a TypeScript codebase using template literal types.
1400
On the Costs of Syscalls (2021)
It's well known that syscalls are expensive. And that software mitigations against CPU bugs (such as Meltdown) even have made them more expensive. But how expensive are they really? To begin to answer this question I wrote a small micro-benchmark in order to measure the minimal costs of a syscall …
1401
Executing Cron Scripts Reliably at Scale
Cron scripts are responsible for critical Slack functionality. They ensure reminders execute on time, email notifications are sent, and databases are cleaned up, among other things. Over the years, both the number of cron scripts and the amount of data these scripts process have increased. While generally these cron…
1402
Eagle 7B: Soaring past Transformers
A brand new era for the RWKV-v5 architecture and linear transformer's has arrived - with the strongest multi-lingual model in open source today
1403
New Renderers for GTK
Recently, GTK gained not one, but two new renderers: one for GL and one for Vulkan. Since naming is hard, we reused existing names and called them “ngl” and “vulkan”. They are built from the same sources, therefore we also call them “unified” renderers. But what is exciting about them? A single source As mentioned...
1404
Two handy GDB breakpoint tricks
Over the past couple months I’ve discovered a couple of handy tricks for working with GDB breakpoints. I figured these out on my own, and I’ve not seen either discussed elsewhere, so I really ought to share them.
1405
Take the Road Most Documented
How great would it be if the solution to most errors you face were in the first place you looked? That’s what the Arch Wiki has been for me: a massive wealth of information and troubleshooting resources to help me navigate the various configuration and installation issues I’ve encountered. Some people claim Arch Linux…
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Stem, a stack-based language with metaprogramming and a C FLI
My own concatenative programming language
1407
Lossy CSS compression for fun and loss (or profit)
Late last year, I had an idea that’s been steadily brewing in my head. I’ve found myself with some free time recently (it coincided with vacation, go figure), and I’ve hacked together some proof-of-concept code. Whether or not it is actually proving the concept I’m not sure, but the results are somewhat interesting…
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WASI 0.2.0 and Why It Matters
With the release of WASI Preview 2, we take a step back and look at why it matters for wasmCloud and the WebAssembly ecosystem.
1409
Multi-database support in DuckDB
DuckDB can attach MySQL, Postgres, and SQLite databases in addition to databases stored in its own format. This allows data to be read into DuckDB and moved between these systems in a convenient manner.
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Bringing Back Horizontal Rules in HTML Select Elements
In September 2023, Safari 17.0 on macOS shipped a small but interesting change to the <select> element.