コードゴルフコンテスト Anybatross YAPC::Fukuoka 2025 開催のお知らせ - KAYAC Engineers' Blog
技術部の谷脇です。皆様いかがお過ごしでしょうか。今回は素敵なオンラインイベントのお知らせです。どなた様でも参加できますのでぜひご参加ください。YAPC::Fukuoka 2025に参加されない方でも参加可能です。 コードゴルフコンテスト PerlAnybatross を開催します！ perlbatross.kayac.com ルールは簡単。与えられた仕様を満たすプログラムをいかに短く書けるかを競うコードゴルフコンテストです。ここで言う"短く"はバイト数なので、改行やスペースも含みます。 今回からPerl以外にもRuby,Python,JavaScript,PHPで提出可能です。真のトップを目指すもよし、腕試しに参加するもよし、言語内トップを取るもよし。皆様の熱い挑戦をお待ちしております。 開催期間 2025年11月10日(月) 13:00 〜 2025年11月25日(火) 11:59 開催
「三項演算子」の名前に値する演算は条件演算子以外にあるか：アセンブリー言語の観点から
三項演算子 (ternary operator) とは、多くの場合はC系の言語にある <条件> ? <真の場合の式> : <偽の場合の式> の形の式（条件演算子）を指します。3つの式を入力として取る演算子なので三項演算子、というわけです。 しかし、「三項演算子」という普遍的にも思える名前で「条件演算子」という具体的な演算子を指して良いのでしょうか？例えば単に「二項演算子」と言って「減算（マイナス）」を指したら「二項演算子は他に加算、乗算などがあるだろう」と文句を言われそうです。そういう文句が少ないのは、三項演算子と呼べる対象が少ないからなのでしょうか？ この記事では、「三項演算子」という名前に値する演算がどの程度あるかを、アセンブリー言語の観点から考えます。 オペランドの数 よくあるRISCアーキテクチャーでは、二項演算の命令は「結果を格納するレジスター」「入力を格納するレジスター1」「入
build system tradeoffs
I am currently employed to work on the build system for the Rust compiler (often called x.py or bootstrap). As a result, I think about a lot of build system weirdness that most people don't have to. This post aims to give an overview of what builds for complicated projects have to think about, as well as vaguely gesture in the direction of build system ideas that I like. This post is generally des
Control structures in programming languages
This book is a journey through the design space and history of programming languages from the perspective of control structures: the language mechanisms that enable programs to control their execution flows. Starting with the “goto” jumps of early programming languages and the emergence of structured programming in the 1960s, the book explores advanced control structures for imperative languages s
鉄道指向プログラミング（の安易な利用）に反対する
2025-03-10 13:00:25 (これは、Against Railway-Oriented Programming - F# for Fun and Profitの日本語訳です) この記事は、2019年のF#アドベントカレンダーの一部です。他の素晴らしい記事もぜひご覧ください。企画者のSergey Tihon氏に感謝します。 6年半前、私は「鉄道指向プログラミング」と呼ぶものに関する記事を書き、講演を行いました。これは、エラーを生成する関数を連結するために、Result / Either をどのように使用するかを、自分自身や他の人に説明するための手段でした。 驚いたことに、このささやかな鉄道のアナロジーは瞬く間に広まり、今ではRuby、Java、JavaScript、Kotlin、Pythonなど、さまざまな言語に対応した鉄道指向プログラミングのライブラリや記事が存在します。 私は
Syntax highlighting is a waste of an information channel
July 20, 2020 Syntax highlighting is a waste of an information channel No newsletter next week Running the TLA+ workshop. No way I'm gonna have any brainpower after that. No, not a waste in general. Syntax highlighting is quite useful. I'm saying it's a waste of an information channel. Here's a quick demonstration of what I mean. Here's 399 squares and one circle. Where's the circle? Round two. Wh
Abstraction, not syntax
written by Ruud van Asseldonk published 12 October 2025 The world is growing tired of yaml. Alternative configuration formats are making the rounds. Toml has steadily been gaining traction, in part due to tools like Cargo and adoption in the Python standard library. Json supersets (with comments, commas, and the digit 5) are flourishing, while KDL, kson and now maml promise to hit the sweet spot b
That boolean should probably be something else | nicole@web
One of the first types we learn about is the boolean. It's pretty natural to use, because boolean logic underpins much of modern computing. And yet, it's one of the types we should probably be using a lot less of. In almost every single instance when you use a boolean, it should be something else. The trick is figuring out what "something else" is. Doing this is worth the effort. It tells you a lo
Processes and Threads — PlanetScale
PlanetScale Postgres is the fastest way to run Postgres in the cloud, and is now available to all users. Learn more By Ben Dicken | September 24, 2025 What do Slack, Cursor, Ghostty, and Chrome have in common? No, they aren't all written in TypeScript. These, along with every other piece of software running on your computer, executes within a Process. The Process is a fundamental abstraction provi
Imagining a Language without Booleans
About MeWPI Transcript Brown Transcript Friends Pictures Resume ArchiveBlackout Faster Than Light Hex Board Invariants Listening To OEIS Logic Gates Penrose Maze Syntactic Sugar Terminal Colors Notes JJ Cheat Sheet Rust Quick Reference Notes on Concurrency Puzzles There and Back Again The Prisoners' Lightbulb Tree Editors Tree Editor Survey Programming Imagining a Language without Booleans Typst a
Configuration files are user interfaces
Configuration files are user interfaces a.k.a. An escape route from YAML hell 18 Sep, 2025 We have all been there. Your software keeps growing and you feel the need to make it customizable. It is too soon for a full-blown UI with all the bells and whistles, so your pragmatic instinct suggests a text-based configuration file. Yes, that’s exactly it! You rejoice knowing the software’s configuration
To be a better programmer, write little proofs in your head
This is a brief write-up of a trick I learned that helps me write code faster and more accurately. I say "trick", but it's really something I started to do without noticing as I moved further into my career. When you're working on something difficult, sketch a proof in your head as you go that your code will actually do what you want it to do. A simple idea, but easier said than done: doing this "
Programming Languages: Application and Interpretation
Programming Languages:Application and InterpretationThis is the Web site for Programming Languages: Application and Interpretation, often referred to by its initials as PLAI (pronounce it like “play”). Over the years well over fifty academic institutions (that I know of) have used PLAI. PLAI is designed for upper-level courses that introduce the main ideas of programming languages. In the US, it i
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Compilation is communication
Empty Intervals are Valid Intervals
domm / Perl / I brain coded a static image gallery in a few hours: snig.pl
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A programmer's field guide to assertions
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