Show HN: Every problem and solution in Beyond Cracking the Coding Interview
Hey HN, I’m Aline, founder of interviewing.io and one of the authors of Beyond Cracking the Coding Interview (the official sequel to CTCI). We just compiled every problem (and solution) in the book and made them available for free. There are ~230 problems in total. Some of them are classics like n-queens, but almost all […]
GoGoGrandparent (YC S16) is hiring Back end Engineers
About us: We’re a digital caregiver that helps older & disabled adults avoid retirement communities and age well in their own homes. We tailor on demand APIs from companies like Uber and Instacart to the needs of people living with cognitive, visual, mobility and dexterity impairments. We’re operating profitably with millions in revenue and growing […]
Show HN: I rewrote my Mac Electron app in Rust
Index Everything Index unlimited files and never lose track of important documents again. Smart Search Find files by their content, not just names. Search inside PDFs, docs, and more. Quick Edits Make changes on the fly without opening heavy applications. Get Organized Transform chaos into clarity with a structured knowledge base.
Japan Post launches ‘digital address’ system
Japan Post said Monday that it has launched a “digital address” system that links seven-digit combinations of numbers and letters to physical addresses. Under the system, users can input these seven-digit codes on online shopping websites, and their addresses will automatically appear on the sites. People can obtain digital addresses by registering with Japan Post’s […]
Compiler Explorer and the Promise of URLs That Last Forever
Compiler Explorer and the Promise of URLs That Last Forever The history is this: back in the old days (2012), we used to store the entire Compiler Explorer state in the URL. That got unwieldy (who would have thought encoding an entire compiler state in a URL might get a bit long?), so we added […]
Launch HN: MindFort (YC X25) – AI agents for continuous pentesting
Hey HN! We’re Brandon, Sam, and Akul from MindFort (https://mindfort.ai). We’re building autonomous AI agents that continuously find, validate, and patch security vulnerabilities in web applications—essentially creating an AI red team that runs 24/7. Here’s a demo: https://www.loom.com/share/e56faa07d90b417db09bb4454dce8d5a Security testing today is increasingly challenging. Traditional scanners generate 30-50% false positives, drowning engineering teams in noise. […]
Getting a Cease and Desist from Waffle House
In late September of 2024, Hurricane Helene was spiraling towards Florida, my home state. My university had cancelled classes for the week, and while people were barricading their homes, I was spending time reverse-engineering Waffle House’s website. Why, you may ask? If you’ve never heard of the Waffle House Index, you’re in for a bit […]
Show HN: Tesseral – Open-Source Auth
Tesseral is open source auth infrastructure for business software (i.e., B2B SaaS). Tesseral is a multi-tenant, API-first service designed to run on the cloud. It is not an authentication library tied to a particular language or framework; Tesseral works with any tech stack. Most developers should start by using Tesseral’s managed service, available at console.tesseral.com. […]
LLM Codegen go Brrr – Parallelization with Git Worktrees and Tmux
May 26, 2025 , Nicholas Khami If you’re underwhelmed with AI coding agents or simply want to get more out of them, give parallelization a try. After seeing the results firsthand over the past month, I’m ready to call myself an evangelist. The throughput improvements are incredible, and I don’t feel like I’m losing control […]
Show HN: Wetlands – a lightweight Python library for managing Conda environments
Wetlands is a lightweight Python library for managing Conda environments. Wetlands can create Conda environments on demand, install dependencies, and execute arbitrary code within them. This makes it easy to build plugin systems or integrate external modules into an application without dependency conflicts, as each environment remains isolated. The name Wetlands comes from the tropical […]