What does HackerNews think of COS?

C Object System: a framework that brings C to the level of other high level programming languages and beyond

Language: C

Object-oriented Programming with ANSI-C (1993) [pdf] | Jun 2023

The C Object System looks like an interesting way of doing this today:

https://github.com/CObjectSystem/COS

and

https://arxiv.org/pdf/1003.2547.pdf

Convincing C programmers to switch to C++: A look at human behavior (2016) | Jun 2017

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I agree, but moreover: You can also do nice OOP with C. Take a look, for example, to COS (C Object System) which implements OOP on top of your C compiler. The object system itself is inspired by CLOS (Common Lisp Object System) and Objective-C (in turn inspired by Smalltalk). It also allows 'automatic' allocation by reference counting.

https://github.com/CObjectSystem/COS

Paper: https://arxiv.org/abs/1003.2547

Carbon: high level programming language that compiles to plain C | Oct 2012

Without a source-level debugger, I see little advantage relative to COS, which is C, but has a more advanced object and type system than Carbon. http://news.ycombinator.com/item?id=1192791 https://github.com/CObjectSystem/COS