Contents Command Line Interface Guidelines An open-source guide to help you write better command-line programs, taking traditional UNIX principles and updating them for the modern day. Authors Aanand Prasad Engineer at Squarespace, co-creator of Docker Compose. @aanandprasad Ben Firshman Co-creator Replicate, co-creator of Docker Compose. @bfirsh Carl Tashian Offroad Engineer at Smallstep, first e
日本株3700社以上を分析。yfinance x「わが投資術」株式スクリーニングアプリを作った話（バイブコーディング）
いきなりですが。 海外旅行したり働き始めたりすると、日本の良さが身に染みたと感じた人は多いんじゃないでしょうか？ なんかとりあえず外で働いてみたいと思っていましたが、今はいつ戻るかと考える日々です。（とにかく温泉に入りたい） また色々と各国を回る中で、日本企業ってアジア圏や他の国にもかなり進出してるんだなぁと実感しました。（そりゃそう） そんなこんなで日本株に興味を持ち 昨年にわが投資術を購入して実践し始めました。（まだ初めて一年目なので成績はわかりません。。。が、マイナスは無し） 自分でバフェットコードや Claude mcp-yfinance などを利用しながらスクリーニングしてみましたが、毎回決算が出るたびに手動とチャット相手にあるのも何かなぁ。と思いまして。 じゃあ自動収集とスクリーニング用のアプリ作ってみよう(vibe coding) そんなノリから、日本株全銘柄を自動収集・簡易
TL; DR LangChainのメリデメを整理する過程で、今となってはopenai-pythonのうちChatGPTのAPIをを簡単に取り回せる程度のシンプルなライブラリがあるだけでも十分便利なんじゃないかと思ったので、ライブラリを個人で作ってみました。（バージョン0.0.1なのでちょっとお粗末な所もありますが） github.com はじめに こんにちは、データサイエンティストの坂元です。ABEJAアドベントカレンダーの13日目の記事です。世は大LLM時代ということで、ありがたいことにABEJAでも複数のLLMプロジェクトを推進させて頂いています。私自身もいくつかのLLMプロジェクトに参画しています。LLMといえばLangChainが便利ですね。OpenAI APIの利用だけでなく、各種ドキュメントのパースが出来たり、HuggingFaceやインデックスDBを扱う他のライブラリとインテ
Building a toy browser
In the last several weeks, I have been building a toy browser based on an online book, Web Browser Engineering. As someone who spent a fair share of his career on web frontend, it was eye-opening and satisfying. It felt like I had been living on one side of a wall for years and finally visited the other side of the wall. I imagine other web frontend folks would like it as well. The book Web Browse
GraphQL is an incredible piece of technology that has captured a lot of mindshare since I first started slinging it in production in 2018. You won’t have to look far back on this (rather inactive) blog to see I have previously championed this technology. After building many a React SPA on top of a hodge podge of untyped JSON REST APIs, I found GraphQL a breath of fresh air. I was truly a GraphQL h
TabFS
Going through the files inside a tab's folder. For example, the url.txt, text.txt, and title.txt files tell me those live properties of this tab (Read more up-to-date documentation for all of TabFS's files here.) This gives you a ton of power, because now you can apply all the existing tools on your computer that already know how to deal with files -- terminal commands, scripting languages, point-
git-sim: Visually simulate Git operations in your own repos
Table of Contents Introduction When --dry-runs aren't enough What is Git-Sim? Git-Sim Goals What Does Git Sim Do? Full list of Git-Sim supported commands Git-Sim features How to Install and Run Git-Sim How Does Git-Sim Work? Contributing to Git-Sim Summary Next Steps Introduction Despite its simple design under the hood, Git is a notoriously confusing tool for new devs to learn to use and understa
Docker is deleting Open Source organisations - what you need to know
Coming up with a title that explains the full story here was difficult, so I'm going to try to explain quickly. Yesterday, Docker sent an email to any Docker Hub user who had created an "organisation", telling them their account will be deleted including all images, if they do not upgrade to a paid team plan. The email contained a link to a tersely written PDF (since, silently edited) which was mi
act: GitHub Actions のワークフローをローカル環境で実行する - kakakakakku blog
GitHub Actions でワークフローを実行するときに git commit と git push を実行して GitHub Actions の実行を待つことがよくある．より迅速に実行して，結果を受け取るために「act」を使って GitHub Actions をローカル環境（コンテナ）で実行する仕組みを試してみた．便利だったので紹介しようと思う❗️ 当然ながら GitHub Actions を完全再現できてるわけではなく，最終的には GitHub Actions を使うことにはなるけど，特に開発中に頻繁にテストを実行できるのはメリットだと思う．うまく併用しながら開発体験を高めよう👌 github.com セットアップ macOS の場合は Homebrew を使って簡単にセットアップできる．他には Chocolatey (Windows) や Bash script も選べる．今回
Announcing New Tools for Building with Generative AI on AWS | Amazon Web Services
Artificial Intelligence Announcing New Tools for Building with Generative AI on AWS The seeds of a machine learning (ML) paradigm shift have existed for decades, but with the ready availability of scalable compute capacity, a massive proliferation of data, and the rapid advancement of ML technologies, customers across industries are transforming their businesses. Just recently, generative AI appli
Linux Crisis Tools
(This is based on Table 4.1 "Linux Crisis Tools" in SysPerf 2.) Some longer notes: [1] bcc and bpftrace have many overlapping tools: the bcc ones are more capable (e.g., CLI options), and the bpftrace ones can be edited on the fly. But that's not to say that one is better or faster than the other: They emit the same BPF bytecode and are equally fast once running. Also note that bcc is evolving and
REST API Design Best Practices Handbook – How to Build a REST API with JavaScript, Node.js, and Express.js
By Jean-Marc Möckel I've created and consumed many API's over the past few years. During that time, I've come across good and bad practices and have experienced nasty situations when consuming and building API's. But there also have been great moments. There are helpful articles online which present many best practices, but many of them lack some practicality in my opinion. Knowing the theory with
January 2016 boasted a Powerball jackpot of 1.5 billion dollars. This generated a lot of interest in the lottery and the Los Angeles Times released a simulator where you start with 100 dollars and play until that is gone. I had seen previous work for predicting Java’s Math.random() and thought it would be a fun project to replicate for the browser. The first step is to find the algorithm used in t
Deploy applications on Amazon ECS using Docker Compose | Amazon Web Services
Containers Deploy applications on Amazon ECS using Docker Compose Note: Docker Compose’s integration with Amazon ECS has been deprecated and is retiring in November 2023 There are many reasons why containers have become popular since Docker democratized access to the core Linux primitives that make a “docker run” possible. One reason is that containers are not tied to a specific infrastructure or
I joined GitLab in October 2015, and left in December 2021 after working there for a little more than six years. While I previously wrote about leaving GitLab to work on Inko, I never discussed what it was like working for GitLab between 2015 and 2021. There are two reasons for this: I was suffering from burnout, and didn't have the energy to revisit the last six years of my life (at that time)I w
Developers are increasingly relying on AI coding assistants to accelerate our daily workflows. These tools can autocomplete functions, suggest bug fixes, and even generate entire modules or MVPs. Yet, as many of us have learned, the quality of the AI’s output depends largely on the quality of the prompt you provide. In other words, prompt engineering has become an essential skill. A poorly phrased
Performance comparison: counting words in Python, Go, C++, C, AWK, Forth, and Rust
Performance comparison: counting words in Python, Go, C++, C, AWK, Forth, and Rust March 2021 Summary: I describe a simple interview problem (counting frequencies of unique words), solve it in various languages, and compare performance across them. For each language, I’ve included a simple, idiomatic solution as well as a more optimized approach via profiling. Go to: Constraints | Python Go C++ C
GitHub - modelcontextprotocol/servers: Model Context Protocol Servers
Official integrations are maintained by companies building production ready MCP servers for their platforms. 21st.dev Magic - Create crafted UI components inspired by the best 21st.dev design engineers. ActionKit by Paragon - Connect to 130+ SaaS integrations (e.g. Slack, Salesforce, Gmail) with Paragon’s ActionKit API. Adfin - The only platform you need to get paid - all payments in one place, in
> BTC: bc1qs0sq7agz5j30qnqz9m60xj4tt8th6aazgw7kxr ETH: 0x1D834755b5e889703930AC9b784CB625B3cd833E USDT(Tron): TPrCq8LxGykQ4as3o1oB8V7x1w2YPU2o5n Ton: UQAtBuFWI3H_LpHfEToil4iYemtfmyzlaJpahM3tFSoxomYQ Doge: D7GMQdKhKC9ymbT9PtcetSFTQjyPRRfkwTdismiss OOP: the worst thing that happened to programming [2/24/2025] In this article, we will try to understand why OOP is the worst thing that happened to prog
Fish 4.0: The Fish Of Theseus
About two years ago, our head maintainer @ridiculousfish opened what quickly became our most-read pull request: #9512 - Rewrite it in Rust Truth be told, we did not quite expect that to be as popular as it was. It was written as a bit of an in-joke for the fish developers first, and not really as a press release to be shared far and wide. We didn’t post it anywhere, but other people did, and we go
GitHub - gristlabs/grist-core: Grist is the evolution of spreadsheets.
Grist is a modern relational spreadsheet. It combines the flexibility of a spreadsheet with the robustness of a database. grist-core (this repo) has what you need to run a powerful server for hosting spreadsheets. grist-desktop is a Linux/macOS/Windows desktop app for viewing and editing spreadsheets stored locally. grist-static is a fully in-browser build of Grist for displaying spreadsheets on a
Introducing Amazon Managed Workflows for Apache Airflow (MWAA) | Amazon Web Services
AWS News Blog Introducing Amazon Managed Workflows for Apache Airflow (MWAA) As the volume and complexity of your data processing pipelines increase, you can simplify the overall process by decomposing it into a series of smaller tasks and coordinate the execution of these tasks as part of a workflow. To do so, many developers and data engineers use Apache Airflow, a platform created by the commun
Terraformとdriftctlで行うGoogle Cloud 権限管理の省力化 - ZOZO TECH BLOG
はじめに こんにちは、ML・データ部MLOpsブロックの岡本です。 MLOpsブロックでは日々複数のGoogle Cloudプロジェクトを管理しています。これらのプロジェクトでは、データサイエンティストやプロジェクトマネージャーなど別チームのメンバーが作業することもあり、必要に応じてメンバーのGoogleアカウントへ権限を付与しています。 権限の付与はプロジェクトの管理者であるMLOpsブロックメンバーが行いますが、これは頻繁に発生する作業でありトイルとなっていました。 また権限付与後はこれらを継続的に管理し、定期的に棚卸しすることで不要になった権限を削除する必要があります。しかし当初の運用だと権限の棚卸しの対応コストが大きく、これが実施されずに不要な権限が残り続けるという課題もありました。 本記事ではMLOpsブロックで抱えていたGoogle Cloudプロジェクト内での権限管理における
導入 本当に革命的な技術なのか? 「君たちはどう生きるか」で驚いている間にすごい論文が世界の話題を掻っ攫っていた。 その名も「ReLORA」簡単に言えば、「事前学習にLoRAを使う」というものである。 これは本当に革命的な発見かもしれないので、僕の仮説も含めて丁寧に説明する。 まず、大前提として、「LoRA」という技術について LoRAは、「Low Rank Adaptation(日本語で言うとすれば低階適応)」という技術で、これまでは主にファインチューニングに使われてきた。 ファインチューニングとは、あらかじめ学習されたニューラルネットワークに対して追加で学習させ、概念を強調させたり新しく覚えさせたりする。 たとえば、僕の顔でStableDiffusionをファインチューニングすれば、僕みたいな顔の絵がどんどん出てくる。 言語モデルにおけるLoRAも同様で、新しい概念や「こういうやりとり
We recently added Python support to Wasm Language Runtimes. This article provides an overview of how Python works in WebAssembly environments and provides a step by step guide on how to use it. At VMware OCTO WasmLabs we want to grow the WebAssembly ecosystem by helping developers adopt this new and exciting technology. Our Wasm Language Runtimes project aims to provide up-to-date, ready-to-run We
[8/27追記] 投資関連のPythonプラグラム等を自由にシェアできるサービスのベータ版を作成しました。 興味がある方は覗いてみてください↓ inbaseシェア|EA・bot・プログラムのシェアサービス この投稿では、Python3を使って仮想通貨の裁定取引を行います。 今回は、コインチェックとGMOコインの価格差を利用してサヤ抜きを行うことを目指します。 以前自分のブログで、 【Pythonデモコード】仮想通貨のアービトラージ（裁定取引）botの作り方 という記事を公開したのですが、こちらはあくまでもシュミレーションで実際に売買が作動することはありませんでした。 今回は実際に取引所のAPIを操作するところまでコートに組み込んでみました。 なおコインチェックと GMO コインの口座開設から API キーの発行までは下の記事で公開している手順と全く同じです。 一応画像付きで解説しているので
Making JavaScript run fast on WebAssembly - Bytecode Alliance
JavaScript in the browser runs many times faster than it did two decades ago. And that happened because the browser vendors spent that time working on intensive performance optimizations. Today, we’re starting work on optimizing JavaScript performance for entirely different environments, where different rules apply. And this is possible because of WebAssembly. We should be clear here—if you’re run
Amazon Bedrock Is Now Generally Available – Build and Scale Generative AI Applications with Foundation Models | Amazon Web Services
AWS News Blog Amazon Bedrock Is Now Generally Available – Build and Scale Generative AI Applications with Foundation Models Update October 10, 2023 — Amazon Bedrock is now available in 3 regions globally: US East (N. Virginia), US West (Oregon), and Asia Pacific (Tokyo). This April, we announced Amazon Bedrock as part of a set of new tools for building with generative AI on AWS. Amazon Bedrock is
Introducing Ezno
Ezno is an experimental compiler I have been working on and off for a while. In short, it is a JavaScript compiler featuring checking, correctness and performance for building full-stack (rendering on the client and server) websites. This post is just an overview of some of the features I have been working on which I think are quite cool as well an overview on the project philosophy ;) It is still
AWS Open Source Blog Sustainability with Rust Rust is a programming language implemented as a set of open source projects. It combines the performance and resource efficiency of systems programming languages like C with the memory safety of languages like Java. Rust started in 2006 as a personal project of Graydon Hoare before becoming a research project at Mozilla in 2010. Rust 1.0 launched in 20
The end of classical computer science is coming, and most of us are dinosaurs waiting for the meteor to hit. I came of age in the 1980s, programming personal computers such as the Commodore VIC-20 and Apple ][e at home. Going on to study computer science (CS) in college and ultimately getting a Ph.D. at Berkeley, the bulk of my professional training was rooted in what I will call “classical” CS: p
ソースコード & ドキュメントに対応したGraph RAGの実装（Tree-sitter + LightRAG）
(module (function_definition (identifier) # ← ここに関数名「sample_func」が含まれます (parameters) (block (expression_statement (call (identifier) (argument_list (string)))))) (expression_statement (call (identifier) (argument_list)))) ノードが色々取れましたが、「function_definition」が関数、その子である「identifier」が関数名を表すため、 function_definition == 子ノード ==> identifier となっている箇所を探索すれば抽出できます（関数ではあっても「lambda」など異なる場合もあります）。 今回は上記のようにTree-si
Spec-driven development with AI: Get started with a new open source toolkit
As coding agents have grown more powerful, a pattern has emerged: you describe your goal, get a block of code back, and often… it looks right, but doesn’t quite work. This “vibe-coding” approach can be great for quick prototypes, but less reliable when building serious, mission-critical applications or working with existing codebases. Sometimes the code doesn’t compile. Sometimes it solves part of
I use Claude Code. A lot. As a hobbyist, I run it in a VM several times a week on side projects, often with --dangerously-skip-permissions to vibe code whatever idea is on my mind. Professionally, part of my team builds the AI-IDE rules and tooling for our engineering team that consumes several billion tokens per month just for codegen. The CLI agent space is getting crowded and between Claude Cod
PacketProxyで探るGemini CLIのコンテキストエンジニアリング 〜AIエージェントを信頼できる相棒に〜 | BLOG - DeNA Engineering
2025.07.18 技術記事 PacketProxyで探るGemini CLIのコンテキストエンジニアリング 〜AIエージェントを信頼できる相棒に〜 by akira.kuroiwa #gemini-cli #ai #security #aiエージェント #コンテキストエンジニアリング #packetproxy 「なんかよく分からないけど、すごい」で終わらせないために こんにちは、DeNA セキュリティ技術グループの 黒岩 亮 ( @kakira9618 ) です。 AIエージェント、とくに Gemini CLI のようなコーディングを支援してくれるツールは非常に強力で、私たちの開発体験を大きく変えようとしています。しかし、その一方で、こんな風に感じたことはありませんか？ 「このファイルの情報、勝手にAIに送られたりしない？ 大丈夫かな？」 と、情報管理・セキュリティ面で漠然とした不安を
Couple of weeks ago when I was publishing The Hidden Cost of URL Design I needed to add SQL syntax highlighting. I headed to PrismJS website trying to remember if it should be added as a plugin or what. I was overwhelmed with the amount of options in the download page so I headed back to my code. I checked the file for PrismJS and at the top of the file, I found a comment containing a URL: /* http
Preliminaries What Is xargs? It's an adapter between text streams and argv arrays, two essential concepts in shell. You pass it flags that specify how to split stdin. Then it generates arguments and invokes processes. Example: $ echo 'alice bob' | xargs -n 1 -- echo hi hi alice hi bob What's happening here? xargs splits the input stream on whitespace, producing 2 arguments, alice and bob. We passe
Modern Emacs Typescript Web (React) Config with lsp-mode, treesitter, tailwind, TSX & more - Ovi Stoica
Table of Contents Introduction Part 1: Treesitter for Typescript & TSX LSP Support Completion setup Linter setup LSP Setup Eslint (Optional) Tailwind LSP Server LSP Performance Emacs LSP Booster Structural editing Formatting buffers with Prettier Other resources Conclusion Introduction I've worked within the JS ecosystem for the past 8 years using editors like Webstorm and VSCode, I started using
If you are like me, every once in a while you write a useful python utility and want to share it with your colleagues. The best way to do this is to make a package: it easy to install and saves from copy-pasting. If you are like me, you might be thinking that creating packages is a real headache. Well, that's not the case anymore. And I am going to prove it with this step-by-step guide. Just three
LogLog Games
The article is also available in Chinese. Disclaimer: This post is a very long collection of thoughts and problems I've had over the years, and also addresses some of the arguments I've been repeatedly told. This post expresses my opinion the has been formed over using Rust for gamedev for many thousands of hours over many years, and multiple finished games. This isn't meant to brag or indicate su
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Command Line Interface Guidelines
LangChainを使わない - ABEJA Tech Blog
Why, after 6 years, I’m over GraphQL
Hacking the JavaScript Lottery
What it was like working for GitLab
The Prompt Engineering Playbook for Programmers
OOP: the worst thing that happened to programming
これぞ革命!?ゼロから大規模言語モデルを学習できるReLORA登場(7/18追記あり)｜shi3z
Adding Python WASI support to Wasm Language Runtimes
【Python実践編】ビットコインのアービトラージ（裁定取引）コード例 - Qiita
Sustainability with Rust | Amazon Web Services
The End of Programming – Communications of the ACM
How I Use Every Claude Code Feature
Your URL Is Your State
An Opinionated Guide to xargs
How to make an awesome Python package