luajit | Wt | |
---|---|---|
1 | 41 | |
540 | 1,647 | |
- | 1.8% | |
10.0 | 8.7 | |
over 4 years ago | 25 days ago | |
C | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
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.
luajit
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Back-end languages are coming to the front-end
> No offence, but have you written any compilers or interpreters?
I have, but nothing sophisticated.
> The points that you discuss [...] may be performance concerns for application developers [...] but they have very little to do with the optimisations you can make as a compiler/interpreter writer. [...] The only one that's somewhat relevant is 'global scope by default'
I didn't mean to imply that these where the three common traits that make both Javascript and Lua particularly hard to optimize, I just picked them as examples for how Javascript and Lua are closer to each other than most other dynamic languages.
But let's dig in a bit on your claim that things like all numbers being doubles or having a array cum map cum record type has very little to do with the optimizations you can make as a compiler/interpreter writer, because it sure seems to me that LuaJIT and V8 do a bunch of optimizations around these things. Both have dual number representations under the hood and will try to avoid representing numbers that remain in the domain of 32 bit integers as double values internally when that gives performance gains. The logic for figuring out if that's the case doesn't seem to be super-straightforward or target architecture independent from looking at the comments in <https://github.com/LuaDist/luajit/blob/master/src/lj_opt_nar...>.
LuaJIT furthermore uses NaN tagging (as do some JS engines, although not V8), which looks less attractive to me as a representation strategy if your numbers are not all/mostly notional doubles (as is indeed the case in newer version of Lua where 64bit integers are the dominant number type)
Also, as far as the super-flexible lua tables are concerned, I'm pretty sure LuaJIT goes through some amount of trouble to specialize various common use cases of tables, e.g. as arrays without holes, and surprise, so does V8 (https://v8.dev/blog/fast-properties#elements-or-array-indexe...). I don't think you'd find something equivalent in a high performance scheme implementation.
> but this doesn't touch the surface of the issues that make JS hard to optimise, such as the fact that your, say, memoisation of an object property or method may be broken by an `eval` call of an arbitrary runtime value somewhere else in the code (which, due to asynchronicity, could take place at more or less any time from the point of view of your given 'peephole').
Eval belongs to a core set of features that basically all popular dynamic languages share that presents headaches for high performance implementations. How is Javascript's eval particularly problematic in this regard, and specifically much more so than Lua's loadstring/load?
More generally what do you think makes (pre-ES6) javascript significantly harder to optimize than lua 5.0?
Wt
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What C++ library do you wish existed but hasn’t been created yet?
Take a look at Wt Webtoolkit. It can do exactly this (and a lot more) https://www.webtoolkit.eu/wt
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Nui C++ User Interface Library
How does this compare with WebToolkit?
- Has anyone embedded a web-UI into a C++ project?
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Cheerp 3.0: The most advanced C++ compiler for the Web now permissively licensed
How is this much different than wt [1] or compiling qt to emscripten? Sincere question.
[1] https://www.webtoolkit.eu/wt
- Launch HN: Pynecone (YC W23) – Web Apps in Pure Python
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The pool of talented C++ developers is running dry
Not posting to prove you wrong but simply because related.
> Wt is a web GUI library in modern C++. Quickly develop highly interactive web UIs with widgets, without having to write a single line of JavaScript. Wt handles all request handling and page rendering for you, so you can focus on functionality.
https://www.webtoolkit.eu/wt
HN submission: https://news.ycombinator.com/item?id=23812791
- Uses of Rust and C++ that only one has?
- Why are all web development frameworks are for high-end languages
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Who is using C++ for web development?
https://www.webtoolkit.eu/wt (has support for HTTP/S)
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Please advise me a c++ web framework.
Wt is a pretty cool framework: https://www.webtoolkit.eu/wt
What are some alternatives?
wasmer-python - 🐍🕸 WebAssembly runtime for Python
Crow - Crow is very fast and easy to use C++ micro web framework (inspired by Python Flask)
diode - Scala library for managing immutable application model
TreeFrog Framework - TreeFrog Framework : High-speed C++ MVC Framework for Web Application
htmx - </> htmx - high power tools for HTML
CppCMS - CppCMS Framework
mumba - Write web-native p2p distributed apps in Swift (and others)
drogon - Drogon: A C++14/17 based HTTP web application framework running on Linux/macOS/Unix/Windows [Moved to: https://github.com/drogonframework/drogon]
reactor - Phoenix LiveView but for Django
Oat++ - 🌱Light and powerful C++ web framework for highly scalable and resource-efficient web application. It's zero-dependency and easy-portable.
django-unicorn - The magical reactive component framework for Django ✨
Cutelyst - A C++ Web Framework built on top of Qt, using the simple approach of Catalyst (Perl) framework.