In 2021 Ben Bridts published a highly inventive method for finding the AWS Account ID of a public S3 bucket. This post describes a technique to find the Account ID of any S3 bucket (both private and public). I'd highly recommend reading Ben's technique first as we will re-use a lot of concepts. S3 Bucket to AWS Account IDShell output can be worth a thousand words, here's what our technique enables
Incident Metrics in SRE
Štěpán Davidovič Incident Metrics in SRE Critically Evaluating MTTR and Friends Boston Farnham Sebastopol Tokyo Beijing Boston Farnham Sebastopol Tokyo Beijing 978-1-098-10313-2 [LSI] Incident Metrics in SRE by Štěpán Davidovič Copyright © 2021 O’Reilly Media, Inc. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebas
Introduction Data preprocessing is a necessary step in any machine learning workflow, affecting both the model’s effectiveness and the ease of maintenance. While scikit-learn is commonly used for preprocessing due to its integration with the broader Python ecosystem, DuckDB offers a practical alternative by enabling SQL-based data transformations within Python. Its declarative syntax supports modu
4 Pandas Anti-Patterns to Avoid and How to Fix Them
pandas is a powerful data analysis library with a rich API that offers multiple ways to perform any given data manipulation task. Some of these approaches are better than others, and pandas users often learn suboptimal coding practices that become their default workflows. This post highlights four common pandas anti-patterns and outlines a complementary set of techniques that you should use instea
Photo by Claudio Schwarz on Unsplash. How to create a Python package? In order to create a Python package, you need to write the code that implements the functionality you want to put in your package, and then you need to publish it to PyPI. That is the bare minimum. Nowadays, you can also set up a variety of other things to make your life easier down the road: continuous testing of your package;
Agents
Intelligent agents are considered by many to be the ultimate goal of AI. The classic book by Stuart Russell and Peter Norvig, Artificial Intelligence: A Modern Approach (Prentice Hall, 1995), defines the field of AI research as “the study and design of rational agents.” The unprecedented capabilities of foundation models have opened the door to agentic applications that were previously unimaginabl
Golang Mini Reference 2022: A Quick Guide to the Modern Go Programming Language (REVIEW COPY)
Golang Mini Reference 2022 A Quick Guide to the Modern Go Programming Language (REVIEW COPY) Harry Yoon Version 0.9.0, 2022-08-24 REVIEW COPY This is review copy, not to be shared or distributed to others. Please forward any feedback or comments to the author. • feedback@codingbookspress.com The book is tentatively scheduled to be published on September 14th, 2022. We hope that when the release da
AST vs. Bytecode: Interpreters in the Age of Meta-Compilation
233 AST vs. Bytecode: Interpreters in the Age of Meta-Compilation OCTAVE LAROSE, University of Kent, UK SOPHIE KALEBA, University of Kent, UK HUMPHREY BURCHELL, University of Kent, UK STEFAN MARR, University of Kent, UK Thanks to partial evaluation and meta-tracing, it became practical to build language implementations that reach state-of-the-art peak performance by implementing only an interprete
syntaxdesign
One of the most recognizable features of a languages is its syntax. What are some of the things about syntax that matter? What questions might you ask if you were creating a syntax for your own language? Motivation A programming language gives us a way structure our thoughts. Each program, has a kind of internal structure, for example: How can we capture this structure? One way is directly, via pi
Note: I received a lot of great feedback from the discussions at Mastodon and Hacker News, so I've updated the post with some improvements to the font! I've also added some further examples and acknowledgements at the end. Syntax Highlighting in Hand-Coded Websites The problem I have been trying to identify practical reasons why hand-coding websites with HTML and CSS is so hard (by hand-coding, I
Vacuous truth - Wikipedia
In mathematics and logic, a vacuous truth is a conditional or universal statement (a universal statement that can be converted to a conditional statement) that is true because the antecedent cannot be satisfied.[1] It is sometimes said that a statement is vacuously true because it does not really say anything.[2] For example, the statement "all cell phones in the room are turned off" will be true
Agentic GraphRAG for Commercial Contracts | Towards Data Science
In every business, legal contracts are foundational documents that define the relationships, obligations, and responsibilities between parties. Whether it’s a partnership agreement, an NDA, or a supplier contract, these documents often contain critical information that drives decision-making, risk management, and compliance. However, navigating and extracting insights from these contracts can be a
Join a VS Code Dev Days event near you to learn about AI-assisted development in VS Code. Update 1.54.1: The update addresses an issue with an extension dependency. Update 1.54.2: The update addresses these issues. Update 1.54.3: The update addresses this issue. Downloads: Windows: x64 Arm64 | Mac: Universal Intel silicon | Linux: deb rpm tarball Arm snap Welcome to the February 2021 release of Vi
Patterns for Building LLM-based Systems & Products [ llm engineering production 🔥 ] · 66 min read Discussions on HackerNews, Twitter, and LinkedIn “There is a large class of problems that are easy to imagine and build demos for, but extremely hard to make products out of. For example, self-driving: It’s easy to demo a car self-driving around a block, but making it into a product takes a decade.”
Proactively keep resources secure and compliant with AWS CloudFormation Hooks | Amazon Web Services
AWS Cloud Operations Blog Proactively keep resources secure and compliant with AWS CloudFormation Hooks Organizations want their developers to provision resources that they need to build applications while maintaining compliance with security, operational, and cost optimization best practices. Most solutions today inform customers about noncompliant resources only after those resources have been p
2025-05-06, Version 24.0.0 (Current), @RafaelGSS and @juanarbol We’re excited to announce the release of Node.js 24! This release brings several significant updates, including the upgrade of the V8 JavaScript engine to version 13.6 and npm to version 11. Starting with Node.js 24, support for MSVC has been removed, and ClangCL is now required to compile Node.js on Windows. The AsyncLocalStorage API
The OpenSSL punycode vulnerability (CVE-2022-3602): Overview, detection, exploitation, and remediation | Datadog Security Labs
emerging threats and vulnerabilities The OpenSSL punycode vulnerability (CVE-2022-3602): Overview, detection, exploitation, and remediation November 1, 2022 emerging vulnerability On November 1, 2022, the OpenSSL Project released a security advisory detailing a high-severity vulnerability in the OpenSSL library. Deployments of OpenSSL from 3.0.0 to 3.0.6 (included) are vulnerable and are fixed in
Tier 4 Support § Support for these targets is entirely experimental. If this target is provided by LLVM, LLVM may have the target as an experimental target, which means that you need to use Zig-provided binaries for the target to be available, or build LLVM from source with special configure flags. zig targets will display the target if it is available. This target may be considered deprecated by
Phylum Discovers Dozens More PyPI Packages Attempting to Deliver W4SP Stealer in Ongoing Supply-Chain Attack
Phylum Discovers Dozens More PyPI Packages Attempting to Deliver W4SP Stealer in Ongoing Supply-Chain Attack Last week, our automated risk detection platform alerted us to some suspicious activity in dozens of newly published PyPI packages. It appears that these packages are a more sophisticated attempt to deliver the W4SP Stealer on to Python developer’s machines by hiding a malicious __import__
AWS Cloud Development Kit Vulnerability Exposes Users to Potential Account Takeover Risks
Reach out to get featured—contact us to send your exclusive story idea, research, hacks, or ask us a question or leave a comment/feedback! Cybersecurity researchers have disclosed a security flaw impacting Amazon Web Services (AWS) Cloud Development Kit (CDK) that could have resulted in an account takeover under specific circumstances. "The impact of this issue could, in certain scenarios, allow a
The Go Programming Language and Environment – Communications of the ACM
Go is a programming language created at Google in late 2007 and released as open source in November 2009. Since then, it has operated as a public project, with contributions from thousands of individuals and dozens of companies. Go has become a popular language for building cloud infrastructure: Docker, a Linux container manager, and Kubernetes, a container deployment system, are core cloud techno
Solving Quantitative Reasoning Problems With Language Models
Solving Quantitative Reasoning Problems with Language Models Aitor Lewkowycz∗, Anders Andreassen†, David Dohan†, Ethan Dyer†, Henryk Michalewski†, Vinay Ramasesh†, Ambrose Slone, Cem Anil, Imanol Schlag, Theo Gutman-Solo, Yuhuai Wu, Behnam Neyshabur∗, Guy Gur-Ari∗, and Vedant Misra∗ Google Research Abstract Language models have achieved remarkable performance on a wide range of tasks that require
This article was discussed on Hacker News. This is a continuation of my last post on how to write a tree-sitter grammar in an afternoon. Building on the grammar we wrote, now we’re going to write a linter for Imp, and it’s even easier! The final result clocks in less than 60 SLOC and can be found here. Recall that tree-sitter is an incremental parser generator. That is, you give it a description o
In Praise of dhh
In Praise of dhh November 8, 2025 | #tech #politics A reflection on Ruby’s past, present, and future. This is a long essay. I strongly recommend you read it from the beginning, but to help navigate it I have created this table of contents. Prologue The Past How I Learned To Love Ruby A Breath Of Fresh Air A Shared Worldview The Present Tragedy Strikes Recent Conflict In The Community Strength and
In 2006 Microsoft conducted a customer survey to find what new features users want in new versions of Microsoft Office. To their surprise, more than 90% of what users asked for already existed, they just didn't know about it. To address the "discoverability" issue, they came up with the "Ribbon UI" that we know from Microsoft Office products today. Office is not unique in this sense. Most of us ar
State of the Common Lisp ecosystem, 2020 🎉 - Lisp journey
NEW: 9 videos (86min) about CLOS on my Common Lisp course. Out of 7h+ of content. Rated 4.7/5. Learn more and stay tuned. 🎥 I also have cool Lisp showcases on Youtube . The last ones: how to build a web app in Common Lisp, part 1 and 2. This is a description of the Common Lisp ecosystem, as of January, 2021, from the perspective of a user and contributor. The purpose of this article is both to gi
prompts.chat
Welcome to the “Awesome ChatGPT Prompts” repository! While this collection was originally created for ChatGPT, these prompts work great with other AI models like Claude, Gemini, Hugging Face Chat, Llama, Mistral, and more. ChatGPT is a web interface created by OpenAI that provides access to their GPT (Generative Pre-trained Transformer) language models. The underlying models, like GPT-4o and GPT-o
使い慣れたプログラミング言語でAWSのインフラ管理をする ～AWS CDKのススメ～ - ABEJA Tech Blog
1. AWS CDKとは 2. AWS CDKを触ってみる 2.1 環境構築 Volta Node.js CDK 2.2. とりあえずLambdaを作成するところまでやってみる 2.2.1. プロジェクト作成 2.2.2. デプロイ用のLambda関数を書く 2.2.3. CDKのStackにLambda関数を記載する 2.2.4. デプロイしてみる 2.2.5. お片付け 2.3. CRUDっぽいAPIをAPI Gatewayで公開してみる 2.3.1. Lambda関数を用意する 2.3.2. CDKを用意する 2.3.3. デプロイして動かしてみる 2.3.4. お片付け 2.3.5. 詰まったところ 3. 感想 We Are Hiring! ABEJAでプロダクト開発をしている平原です。ABEJAアドベントカレンダー2023の6日目の記事です。皆さんはAWSでIaCを利用する時には
概要 会社で使っているEC2はSavings Plansを採用していてオンデマンドで使うよりも安い料金でEC2を利用しています。 ただそれでもEC2の数が段々と増えていて、当初の予想よりもコンピューティングリソースの消費が大きくなりEC2の利用料が大きくなってきました。 そこで検証環境のEC2の稼働時間を減らし、コンピューティングリソースの消費を抑えることでEC2の利用料を節約しようと思いました。 前職では先輩が作成したLambdaで21:00~翌9:00の時間帯は自動でシャットダウンする仕組みができており、当初はそれを真似しようと思いましたがInstance Schedulerなるものを今の会社のリーダーから教わりました。 今回はInstance Schedulerを実際に使ってみてどういったものなのか試してみました。 Instance Schedulerについて 先にお話しするとIns
This past May, I started a new job working in Rust. I was somewhat skeptical of Rust for a while, but it turns out, it really is all it’s cracked up to be. As a long-time C++ programmer, and C++ instructor, I am convinced that Rust is better than C++ in all of C++’s application space, that for any new programming project where C++ would make sense as the programming language, Rust would make more
When I see the landscape of native GUI in 2022, I feel like something is missing. I don’t just mean Rust UI. My frustrations with UI frameworks started long before I’d even heard of Rust. The origin story: Qt and fear The Qt framework is a C++ toolkit for writing GUI apps. In 2019, I spent a year working on a Qt project for an energy company, a diagram editor meant to be used by electrical enginee
Try Mastering Emacs for free! Are you struggling with the basics? Have you mastered movement and editing yet? When you have read Mastering Emacs you will understand Emacs. It’s that time again: there’s a new major version of Emacs and, with it, a treasure trove of new features and changes. Notable features include the formal inclusion of native compilation, a technique that will greatly speed up y
vim9script4pythondevelopers.md Vim9 script for Python Developers Vim9 script�Vim script��������������������������������������������������系��� def������義����������Vim script��vim9script�����使����������(vim9script���
PEP 634 – Structural Pattern Matching: Specification | peps.python.org
PEP 634 – Structural Pattern Matching: Specification Author: Brandt Bucher <brandt at python.org>, Guido van Rossum <guido at python.org> BDFL-Delegate: Discussions-To: Python-Dev list Status: Final Type: Standards Track Created: 12-Sep-2020 Python-Version: 3.10 Post-History: 22-Oct-2020, 08-Feb-2021 Replaces: 622 Resolution: Python-Committers message Table of Contents Abstract Syntax and Semantic
Node.js
Notable changes Add support for externally shared js builtins By default Node.js is built so that all dependencies are bundled into the Node.js binary itself. Some Node.js distributions prefer to manage dependencies externally. There are existing build options that allow dependencies with native code to be externalized. This commit adds additional options so that dependencies with JavaScript code
Virus scan S3 buckets with a serverless ClamAV based CDK construct | Amazon Web Services
AWS Developer Tools Blog Virus scan S3 buckets with a serverless ClamAV based CDK construct Edit: March 10th 2022 – Updated post to use AWS Cloud Development Kit (CDK) v2. Protecting systems from malware is an essential part of a systems protection strategy. It is important to both scan binaries and other files before introducing them into your system boundary and appropriately respond to potentia
A professional programmer delivers value through the authoring and maintaining of software that solves problems. (There are other important ways for professional programmers to deliver value but this post is about programming.) Programmers rely on various tools to author software. Arguably the most important and consequential choice of tool is the programming language. In this post, I will articul
Plan 9 Desktop Guide
PLAN 9 DESKTOP GUIDE INDEX What is Plan 9? Limitations and Workarounds Connecting to Other Systems VNC RDP SSH 9P Other methods Porting Applications Emulating other Operating Systems Virtualizing other Operating Systems Basics Window Management Copy Pasting Essential Programs Manipulating Text in the Terminal Acme - The Do It All Application Multiple Workspaces Tiling Windows Plumbing System Admin
Testing web applications hosted in a private network using AWS Device Farm | Amazon Web Services
Front-End Web & Mobile Testing web applications hosted in a private network using AWS Device Farm AWS Device Farm offers an elastic Selenium Grid in the cloud that provides instant access to different versions of Chrome, Firefox, Internet Explorer, and Microsoft Edge browsers running on Windows servers. Today, thousands of web developers are leveraging Device Farm’s Grid to verify that their appli
Amazon S3とAmazon CloudFrontによる静的ウェブサイトにSSL/TLS証明書(AWS Certificate Manager)・基本認証(Lambda@Edge)・IP制限(AWS WAF)をクロスリージョンで追加するAWS CloudFormationテンプレートとAWS Lambdaカスタムリソース - NRIネットコムBlog
小西秀和です。 この記事は過去に投稿した次の記事の続編で、SSL/TLS証明書(AWS Certificate Manager)、基本認証(Lambda@Edge)に加えてIP制限(AWS WAF)を追加したパターンでAmazon S3とAmazon CloudFrontによる静的ウェブサイトホスティングをAWS CloudFormationテンプレートとAWS Lambdaカスタムリソースを使用して構成するものです。 AWS LambdaカスタムリソースでSSL証明書・基本認証・CloudFrontオリジンフェイルオーバーを作成するAWS CloudFormationスタックを別リージョンにデプロイする 今回は更にOrigin Access Identity(OAI)をOrigin Access Control (OAC)に変更し、キャッシュポリシー(CachePolicy)、オリジンリ
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How to find the AWS Account ID of any S3 Bucket | Tracebit
Basic Feature Engineering with DuckDB
How to create a Python package in 2022
Font with Built-In Syntax Highlighting
February 2021 (version 1.54)
Patterns for Building LLM-based Systems & Products
Node.js — Node.js v24.0.0 (Current)
0.8.0 Release Notes ⚡ The Zig Programming Language
How to write a linter using tree-sitter in an hour
Lesser Known PostgreSQL Features
Instance Schedulerを使ってEC2の稼働時間を管理してみた
Sayonara, C++, and hello to Rust!
Announcing Masonry 0.1, and my vision for Rust UI
What's New in Emacs 28.1?
Vim9 script for Python Developers · GitHub
Gregory Szorc's Digital Home | Rust is for Professionals