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
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
アドプラットフォーム事業部 アドプロダクト部 データチームでアナリティクスエンジニアをしているucchi-です。普段は主に、pixiv Adsという広告ネットワークのデータ周りを開発しています。 ads.pixiv.net 今回は、pixiv Adsで採用している、Lookerの埋め込みダッシュボードについて紹介します。 はじめに ピクシブでは全社的にLookerを使用しています。Lookerを使うことで、BigQueryに保存されている品質の高いデータを気軽に分析することができ、社内の仮説検証や意思決定に役立っています。 一方で、Lookerは社内の分析用途だけではなく、社外へのデータ提供にも活用できます。 具体的な手段はいくつかありますが、pixiv Adsでは、「シングルサインオン（SSO）組み込み」という形式で、クライアント向けの広告管理画面にLookerのダッシュボードを埋め込ん
Joining CSV and JSON data with an in-memory SQLite database
19th June 2021 The new sqlite-utils memory command can import CSV and JSON data directly into an in-memory SQLite database, combine and query it using SQL and output the results as CSV, JSON or various other formats of plain text tables. sqlite-utils memory The new feature is part of sqlite-utils 3.10, which I released this morning. You can install it using brew install sqlite-utils or pip install
What used to take an entire development sprint now ships in a single afternoon. The numbers prove it: according to Stack Overflow's 2024 Developer Survey of over 65,000 developers, 76% are now using or planning to use AI coding assistants in their development process—up from 70% the previous year. The shift from "AI is a novelty" to "AI is how developers code" happened faster than anyone predicted
Motivation Introduction User input strace Printing non-printable stty raw -echo -isig UTF-8 Conclusion Motivation This blog series explains how modern terminals and command-line tools work. The primary goal here is to learn by experimenting. I’ll provide Linux tools to debug every component mentioned in the discussion. Our focus is to discover how things work. For the explanation of why things wor
uv is the best thing to happen to the Python ecosystem in a decade - Blog - Dr. Emily L. Hunt
uv is the best thing to happen to the Python ecosystem in a decade Programming 23 October 2025 | Reading time: 6 minutes It’s 2025. Does installing Python, managing virtual environments, and synchronizing dependencies between your colleagues really have to be so difficult? Well… no! A brilliant new tool called uv came out recently that revolutionizes how easy installing and using Python can be. uv
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.”
git-sim - Visually simulate Git operations in your own repos with a single terminal command.
git-sim Visually simulate Git operations in your own repos with a single terminal command. This generates an image (default) or video visualization depicting the Git command's behavior. Command syntax is based directly on Git's command-line syntax, so using git-sim is as familiar as possible. Example: $ git-sim merge <branch> Use cases Visualize Git commands to understand their effects on your rep
Fizz Buzz is a counting game that has become oddly popular in the world of computer programming as a simple test of basic programming skills. The rules of the game are straightforward. Players say the numbers aloud in order beginning with one. Whenever a number is divisible by 3, they say 'Fizz' instead. If it is divisible by 5, they say 'Buzz'. If it is divisible by both 3 and 5, the player says
Bucket full of secrets – Terraform exfiltration | Mercari Engineering
Background At Mercari, we utilize many microservices developed across multiple different teams. Each team has ownership over not only their code, but also the infrastructure necessary to run their services. To allow developers to take ownership of their infrastructure we use HashiCorp Terraform to define the infrastructure as code. Developers can use Terraform native resources or custom modules pr
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
Unix ASCII games
Unix ASCII games View the Project on GitHub ligurio/awesome-ttygames Unix ASCII games Feel free to submit pull requests to add new games and improve information about those already in the database. How to contribute Check games.yaml out. All information is inside, and you should more or less understand what’s going on by reading it. Sorting is alphabetical. Simplest way to contribute: edit games.y
A Lisp REPL as my main shell
If you enjoy this article and would like to help me keep writing, consider chipping in, every little bit helps to keep me going :) Thank you! Update: As of 2021-02-07, not all the code and configurations used in this presentation have been published. Should happen in the coming days, stay tuned! Introduction video The concepts I’m going to present in this article were featured in a presentation at
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
An AI-native software engineer is one who deeply integrates AI into their daily workflow, treating it as a partner to amplify their abilities. This requires a fundamental mindset shift. Instead of thinking “AI might replace me” an AI-native engineer asks for every task: “Could AI help me do this faster, better, or differently?”. The mindset is optimistic and proactive - you see AI as a multiplier
Julia vs Numba and Cython: Looking Beyond Microbenchmarks
We compare the performance of Julia and Numba, for a minimal benchmark that enables to see some fundamental difference between Julia and accelerated-Python. Python is a programming language with so many advantages that we don’t even need to list them. It is also commonly acknowledged that its main drawback is code performance. Given this problem, many ways of speeding-up Python have been proposed
The Evolving eBPF Toolchain
These days there is an ever-growing list of tools and frameworks for working with eBPF, all at varying levels of abstraction. There does seem to be a few that sit at the core of the rest of the eBPF ecosystem. However, the ecosystem is changing rapidly, and I’ve found it to be a bit difficult to navigate through the sea of information that’s out there and understand which tools are the current “st
Update 2022-03-10: I’m quoting a few insightful tweets at the end of this blog post. The ECMAScript proposal “Types as comments” (by Gil Tayar, Daniel Rosenwasser, Romulo Cintra, Rob Palmer, and others) is about adding type annotations to JavaScript (there is also an accompanying blog post). Such type annotations would look similar to TypeScript’s and Flow’s annotations and are completely ignored
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The Prompt Engineering Playbook for Programmers
Adding Python WASI support to Wasm Language Runtimes
Lookerの埋め込みダッシュボードを社外提供する上での課題と解決策 - pixiv inside
The Best AI Coding Tools in 2025
How terminal works. Part 1: Xterm, user input
Patterns for Building LLM-based Systems & Products
Fizz Buzz with Cosines - Susam Pal
Gregory Szorc's Digital Home | Rust is for Professionals
The AI-Native Software Engineer
First look: adding type annotations to JavaScript