|28 days ago||over 1 year ago|
|MIT License||MIT License|
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Optimizations Enabled by -ffast-Math
1 project | news.ycombinator.com | 20 Oct 2021
Fast math optimizations can break code like this by breaking isNaN.
I was porting a C++ project to a certain platform - and that platform enabled a -ffast-math equivalent by default in Release (but not Debug) builds! This broke duktape, a JS engine said project embedded, in some nasty and subtle ways. Instead of storing a number/pointer/??? (8 bytes) + type tag (4? bytes) for each dynamically typed JS value, duktape can bit-pack values into a single 8 byte "double" value by storing object/string handles as NaN values - this isn't an uncommon trick for dynamically typed scripting stuff:
Naturally, the -ffast-math equivalent broke isNaN checks, which caused random object/string handles to be mistakenly reinterpreted as "numbers" - but only in Release builds, for this one particular platform, in one rarely taken branch, so neither QA nor CI caught it, leading to hours of manufacturing a repro case, stepping through an absurd amount of code, and then finally looking at the default build rules and facepalming.
Cursing the platform vendor under my breath, I overrode the defaults to align with the defaults of every other config x platform combination we already had: no fast math. If you want those optimizations, use SSE-friendly NaN-avoiding intrinsics - or, if you must use the compiler flags, ensure you do so consistently across build configs and platforms, perhaps limited to a few TUs or modules if possible. This allows you to have a chance at using your Debug builds to debug the resulting "optimizations".
Can C++ and JS be used together?
1 project | reddit.com/r/learnprogramming | 27 Apr 2021
- Duktape (4.8k stars)
1 project | dev.to | 28 Mar 2021
Edge’s Chakra~ Edge has recently embraced Chromium‘s V8 engine.
2 projects | dev.to | 23 Mar 2021
nvm ou comment travailler avec plusieurs versions de Node.js
3 projects | dev.to | 7 Jan 2021
nvs : propose un interpréteur plus évolué et la possibilité de choisir également ChakraCore.
What are some alternatives?
V8 - The official mirror of the V8 Git repository
Lua - Lua is a powerful, efficient, lightweight, embeddable scripting language. It supports procedural programming, object-oriented programming, functional programming, data-driven programming, and data description.
ChaiScript - Embedded Scripting Language Designed for C++
SWIG - SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages.
squirrel - Official repository for the programming language Squirrel
Wren - The Wren Programming Language. Wren is a small, fast, class-based concurrent scripting language.