The latest blog posts to take off on Hacker News. 5,634 posts.
While browsing Reddit the other day waiting for my code to compile, I ran across this question on r/Python: is hash(-1) == hash(-2) an easter egg? Wait, is that really true? $ python Python 3.9.6 (default, Jun 29 2021, 00:00:00) [GCC 11.1.1 20210531 (Red Hat 11.1.1-3)] on linux Type "help", "copyright", "credits" or…
Programming has obvious abilities to increase productivity through automated manipulation of data. Metaprogramming allows code to be treated as data, turning programming’s power back onto itself. Programming close to the metal has perhaps the most to gain from metaprogramming as high level concepts need to be mapped…
Dmitrii Kovanikov's Personas Web Space
With this post I will concentrate on the here and now: how to use C’s future lifesaving defer feature with existing tools and compilers.
Alright, you know the drill. The Ruby team do the hard work of putting together a new version packed with features and I pick my favourites and write about them.
Static or dynamic, a program's design is written in its types.
Some time ago I was talking about an ahead-of-time Ruby compiler. We started the project with certain goals and hypotheses in mind, and while the original compiler is at nearly 90% completion, there are still those other 90% that needs to be done.
So I like to joke occasionally on the Fediverse that when looking at Wikipedia's list of programming languages supporting dependent types :
An implemenation of the SuperMemo-2 algorithm.
Introduction The more I learn about Lua's design and implementation, the more impressed I am. It's very rare to see software that does so much with so lit...
CPS, or continuation-passing style, is an intermediate representation for programs, particularly functional programs. It’s used in compilers for languages such as SML and Scheme. Much of its utility comes from its support for tail calls and nonlocal control flow such as call/cc, but it can also be used as an…
We are pleased to announce the release of Ruby 3.4.0. Ruby 3.4 adds it block parameter reference,changes Prism as default parser, adds Happy Eyeballs Version...
Where I try to explain why I feel like C\+\+ is so much fun, and to correct some misinformation.
A long time ago, I wrote a memoization library for Ruby. It was not easy, but I learned a great deal in the process. In this article, I am share these learnings and showing you how deep the memoization rabbit hole goes.
A few years ago, on a whim, I wrote YAIOUOM. YAOIOUM was a static analyzer for Rust that checked that the code was using units of measures correctly, e.g. a distance in meters is not a distance in centimeters, dividing meters by seconds gave you a value in m / s (aka m * s^-1). YAIOUOM was an example of a refinement…
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I’ve been using Rust for hobby projects since 2016 and have been working professionally in Rust since 2021, so I tend to consider myself pretty knowledgeable about Rust. I’m already familiar with all the common limitations of Rust’s type system and how to work around them, so it’s pretty rare that I have to “fight the…
Improve startup time by making the classes of an application instantly available, in a loaded and linked state, when the HotSpot Java Virtual Machine starts. Achieve this by monitoring the application during one run and storing the loaded and linked forms of all classes in a cache for use in subsequent runs. Lay a…
The ride is coming to an end. The experiment is done. We tried, but we admit defeat. Four years ago we started adding support for an alternative HTTP backend in curl. It would use a library written in rust, called hyper. The idea was to introduce an alternative implementation of HTTP internals that you could ……
A deep dive into how I use types to the fullest
How to handle and report errors effectively in Rust applications is a common question. This blog shares our experience organizing variant types of Error in a complex system like GreptimeDB, from how an error is defined to how to log the error or present it to end-users. Such a system is composed of multiple components…
I had never met Randal Schwartz before, but when I reached out to him about contributing to year 25 of the Perl Advent Calendar, he immediately agreed. This year I wanted to try some new things and Randal suggested giving a Perl-specific talk which he had given once before, but which was lacking in recording quality…
Java has many features that make it well suited for large, long-lasting projects. But I find it surprisingly good for small tasks as well. Recent language features make it even better. The killer features are compile-time typing and great tool support.
Meta has been on a years-long undertaking to translate our entire Android codebase from Java to Kotlin. Today, despite having one of the largest Android codebases in the world, we’re well pas…
Handling errors in Go is simple and flexible – yet no structure! It’s supposed to be simple, right? Just return an error , wrapped with a message, and move on. Well, that simplicity quickly turns into chaotic as our codebase grows with more packages, more developers, and more “quick fixes” that stay there forever…
Hi, I'm Peter Bex, a Scheme and free software enthusiast from the Netherlands. See my user page on the CHICKEN wiki or my git server for some of my projects.
We are adding a new generated code API to Go Protobuf.
A deep dive into Rust’s vec::Drain and its Drop implementation as an example of how ownership prevents subtle bugs—memory and otherwise!
I was honored to present a talk on Ruby concurrency at RubyConf 2024. It represents a high-level distillation of much of my writing and research over the past year. The conference itself was great, and presenting was such a fun experience. Here is the talk, titled “In-Depth Ruby Concurrency: Navigating the Ruby…
