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How to Debug Chez Scheme Programs (2002)

news.ycombinator.com Unknown 2025-09-19 20:22:47

How to Debug Chez Scheme Programs R. Kent Dybvig August 2002 When a program fails to operate as it should, it is said to have a bug. A bug is the root cause of an observed behavior, such as failure to terminate, failure to perform some action, termination with an error message, or merely producing incorrect results. The process of debugging a program is one of finding all of the bugs and "exterminating" them. This process first requires feeding the program a representative set of test cases,

Topics: buggy db define error program
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Advanced Rust macros with derive-deftly

news.ycombinator.com Unknown 2025-12-14 00:21:34

derive-deftly is a Rust package that you can use to define your own derive macros without having to write low-level procedural macros. The syntax is easy to learn, but powerful enough to implement macros of significant complexity. Just below is a simple example, to help you get a feel for the system. There is also comprehensive and rigorous reference material: Suppose you want to add accessor functions for the fields in your struct . You could do it by hand, like this: #![allow(unused)] fn

Topics: define deftly derive self u32
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Show HN: Easy alternative to giflib – header-only decoder in C

news.ycombinator.com Unknown 2026-01-10 22:56:33

GIF Decoder Library TurboStitchGIF is a lightweight, header-only C library for decoding GIF images with a focus on efficiency and minimal resource usage. Designed for embedded systems and performance-critical applications, it provides a simple API for decoding both static and animated GIFs while maintaining a tiny footprint. ✨ Key Features Single-header implementation - Just include gif.h in your project - Just include in your project Zero dynamic allocations - Works with user-provided memor

Topics: define gif library mode support
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Building Linux kernel on macOS natively

news.ycombinator.com Unknown 2026-02-10 00:53:03

I've recently added a Linux compatibility layer to Starina operating system based on a lightweight VM approach similar to WSL2. I can cross-compile its init program with Cargo. I can prepare a container image contents using skopeo. However, I need to build the genuine Linux kernel, preferably on my daily driver: macOS. The most common way to build Linux kernel on macOS would be using Docker Desktop, and that works fine. I know nobody need to build on macOS natively, but it looked possible - th

Topics: define include kconfig macos scripts
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Galaxy phone users should turn on these new anti-theft features ASAP, says Samsung

zdnet.com Artie Beaty 2026-02-17 11:39:12

Identity check: Samsung lets you define trusted places (say, your home in Google Maps) where your phone stays unlocked. With the "Safe Places" feature, if you're outside a trusted place, your phone will require biometric authentication for any sensitive security changes. This helps keep your device safe even if someone has your PIN.

Topics: define phone places safe trusted
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Datalog in miniKanren

news.ycombinator.com Unknown 2026-03-15 18:16:08

A browser with Wasm GC and tail call support is required for this demo. We recommend using either Mozilla Firefox or Google Chrome. Datalog in miniKanren Having access to an embedded logical programming language makes some tasks really easy. One prerequisite for RealTalk is some form of Datalog, and I built one in Scheme using miniKanren so that I had access to all of the internals. This page explains the naive Datalog implementation I did before modifying some of it to fit my version of Dynam

Topics: datalog define dl entity rule
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