Based C++

https://github.com/SheafificationOfG/based-cpp

by phamtrongthang • 10 months ago

104 37 10 months ago

github.com

stephenlf• 10 months ago

I love sheaf’s work

phamtrongthang• 10 months ago

Me too. He is so creative. I came across this repo and realized he also made a video about it.

luserz• 10 months ago

great video and source but needs a try-catch block

chris_wot• 10 months ago

So confused what this is...

olivia-banks5• 10 months ago

As far as I can tell, it looks like a wrapper for cc1plus (internal GCC tool) and ld that do a custom #define of some input data, compile, extract some data from the binary, and do... something with it. Makes it look like C++ is an interpreted language.

pjmlp3• 10 months ago

Implementations are orthogonal to languages, there have been C and C++ interpreters since the languages exist, as you can see by looking at BYTE and Dr Dobbs archives looking for compiler developer tools ads.

ajkjk2• 10 months ago

You'll need this https://www.youtube.com/watch?v=cFtymODJEjs

ptspts• 10 months ago

This video doesn't explain what the project does and how it does it. Also it's deliberately misleading the viewer, for example it purposefully incorrectly states that C++ is an interpreted language.

Also the music is way is too loud and sudden.

olivia-banks5• 10 months ago

I wish all projects like these had some sort of documentation as to how they worked. All I can see is that the `-B` flag tells GCC to look in the ased directory for internal binaries (cc1plus and ld), but anything other than that would require more than the few minutes I have to look into.

It's also really interesting to see the audience this is reaching. The issues on the GitHub repository are quite telling.

OvbiousError• 10 months ago

Open the cc1plus or ld "internal binaries" to be even more confused ;)

haskellshill• 10 months ago

Is it really that confusing though? He's just using a python script that runs the program instead of linking it. Sure the details may be interesting but the high-level concept is obvious

rurban• 10 months ago

A bit silly, but ok.

s20n• 10 months ago

Man, that went way over my head.

But if you just want to run C++ in a REPL, you can use Clang-Repl <https://clang.llvm.org/docs/ClangRepl.html> which uses the LLVM JIT to "interpret" C++.

jwrallie• 10 months ago

I had good experience with Xeus cling for a notebook interface.

serbuvlad• 10 months ago

Based? Based on what?

naruhodo• 10 months ago

Usually means "based on facts".[1]

Here, probably used ironically.

[1] https://www.urbandictionary.com/define.php?term=based

pjc502• 10 months ago

I don't think I've ever seen it used outside of a heavily irony-poisoned context.

KuSpa• 10 months ago

Based.

indigoabstract• 10 months ago

Got roped into watching the whole video. He obviously loves C++. And since I actually enjoyed it, I suppose that also tells something about me.

Also read up on sheafification really quick. Neither Firefox nor Chrome seem aware of it (red underline), so there.

Edit: If anyone is actually interested in interpreted C++, I think AngelScript is the most practical way for this.

olivia-banks5• 10 months ago

Seconding AngelScript, but there’s also Squirrel, and a myriad of other C/Lua-like languages. AngelScript’s interop story is really cool, though.

Iwan-Zotow• 10 months ago

Cling from root

pjc502• 10 months ago

Would anyone like to explain in text form how this works? I've got as far as the use of <{ meaning to run at compile time, so the whole thing is going to be one of those template metaprogramming stunts.

gpderetta3• 10 months ago

it is "simply" a DSL implementing a full custom language that is run at compile time. As far as I can tell the DSL is implemented with the tried-and-true technique of expression templates[1] combined with constant evaluation and unrestricted template value parameters (although these days there are multiple options to implement compile time DSLs, up to compile time parsing of strings).

As to why, I can't pretend to know the author mind, but I suspect they did it because they could, the project itself is the objective.

[1] https://en.wikipedia.org/wiki/Expression_templates

seiferteric• 10 months ago

The whole thing is a joke but presented in a serious manner. The idea is that if you know your program input at compile time you can turn everything into a constexpr which gets evaluated at compile time so your program is "ran" by the compiler instead of at run time. So he built a "runtime" that is actually ran by the compiler around this idea for fun.

delta_p_delta_x• 10 months ago

So he built a "runtime" that is actually ran by the compiler around this idea for fun.

Funnily enough, sufficiently enough of C++ is constexpr-able that it was the driving force for compile-time reflection in C++[1], which is not unlike what the author has done.

Although the new syntax is much more readable than what the author chose to do with expression templates, it's still annoying, as is much of C++. But I still like it, so I am decidedly Stockholmed.

[1] https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/p29...

gpderetta3• 10 months ago

10/10 no notes.

oytis• 10 months ago

Can't wait for this to be consumed by LLMs.

Based C++

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