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Is there a compiler that can compile source code into a bunch of source codes for different platforms?
2 projects | reddit.com/r/AskProgramming | 11 Mar 2022
This sounds a bit like SWIG. You give SWIG an "interface file" describing the API of a library, and it uses that to spit out a bunch of language-specific bindings for that library.
Wrapping a c++ with .Net framework
1 project | reddit.com/r/learnprogramming | 28 Jan 2022
Try out http://www.swig.org/
Learn Python the hard way
2 projects | reddit.com/r/ProgrammerHumor | 3 Dec 2021
A new tool for calling C++ from python
4 projects | reddit.com/r/cpp | 11 Nov 2021
SWIG and Perl
3 projects | reddit.com/r/perl | 16 Oct 2021
Check out the site www.swig.org it will answer several of your questions. XS code is specific to Perl that you have to know how to code and use. SWIG takes code from C and C++ (actually several languages) and uses code templates to generate all the XS code for you. I wrote both a C library and C++ library doing different things, and used SWIG to import them into Perl (via "use"), Python and PHP. There is a learning curve, but it's not that bad, and there is a lot of great documentation and examples on the SWIG site.
Text extraction, HELP
1 project | reddit.com/r/learnprogramming | 23 Sep 2021
Ohhh alrightt I went through the installation of pypodofo. 1. Install podofo library. For example in archlinux, pacman -S podofo 2. Install swig tool. Note, you should have installed gcc and g++ compilers 3. Build wrapper. python setup.py build 4. Copy dynamic library to python package. cp build/lib.linux-x86_64-3.7/_api.cpython-37m-x86_64-linux-gnu.so pypodofo/ 5. Install requirements. pip install -r requirements.txt (if possible in a virtualenv). 6. Run tests. nosetests tests/
Trying to write a cross-language library
8 projects | reddit.com/r/rust | 25 Jul 2021
Another option is SWIG, but I don't like it too much.
Obvious and possible software innovations nobody does
8 projects | news.ycombinator.com | 19 Jun 2021
* I was using SWIG (http://www.swig.org/) 15+20 years ago to bind C/C++ to Perl and Java and it still exists.*
I've used it. It took the entire thing you want to call and generated one giant file of munged C. That's sort of where that idea takes you.
But the author is on to something. There's a C to Rust translator. It sucks, because it works by emulating C pointer arithmetic in unsafe Rust, using its own set of primitives along the lines of "offset this pointer by this much". Now you have ugly, unsafe Rust.
What's needed is something that infers the meaning of an ambiguous function call from the code. Something that reasons like this:
int read(char* buf, size_t n)
¿Cómo mejorar el rendimiento de una aplicación hecha en Django?
3 projects | dev.to | 26 May 2021
Are there extensible environments in the manner of Emacs outside of text editors and developer tools generally?
4 projects | reddit.com/r/emacs | 3 Apr 2021
For the parsing part it is probably not a big deal. Either your own elisp code or use something like clangd. I am not so knowledgable about the implementation deatils for LSP & Co, but it is definitely possible to parse headers and extract definitions. There are also tools like swig.
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)
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.
CppSharp - Tools and libraries to glue C/C++ APIs to high-level languages
Cython - The most widely used Python to C compiler
JavaCPP - The missing bridge between Java and native C++
JNA - Java Native Access
libffi - A portable foreign-function interface library.
PyCUDA - CUDA integration for Python, plus shiny features