3 ms·

Except for most of deno that's written in Unsafe C++. https://v8.dev/ https://v8.dev/

by asguy 4y ago

Banana699 4y ago
A JS runtime is a lot more than the core engine, or else nodejs is just a thin wrapper over V8 as well, which is obviously absurd. So without a count of the source lines for each language's portion of the implementation (very rough but acceptable first approximation of how much is implemented in each), you can't claim C++ is doing most of the heavy lifting and be taken seriously. PS. the worst C++ code is still a hell of a lot more safe than the best C code. This is easy to convince yourself of by noting that C++ mostly supersets C and only deviates to add more safety and static checking, not less. So it's a strict improvment over C, not by a lot, but an improvment nonetheless. Here are other examples for VMs not written in any of those 2 braindead languages though: [1] Bun : JS runtime in Zig. https://bun.sh/ https://bun.sh/ [2] Squeak : Smalltalk VM written in Smalltalk. http://www.vpri.org/pdf/tr1997001_backto.pdf http://www.vpri.org/pdf/tr1997001_backto.pdf [3] PyPy : Not actually a single VM but an entire framework\toolchain to write VMs, most famous of which is one for Python. The language used to write VMs for the framework is a subset of python called Rpython. https://doc.pypy.org/en/latest/ https://doc.pypy.org/en/latest/ [4] Maxine Virtual Machine : a JVM written entirely in Java. It's not the only one. https://en.wikipedia.org/wiki/Maxine_Virtual_Machine https://en.wikipedia.org/wiki/Maxine_Virtual_Machine ; https://news.ycombinator.com/item?id=15733645 https://news.ycombinator.com/item?id=15733645 Modern VM research is far beyond the 50 year old assembler that thinks itself a programming language. The future is here, just not very evenly distributed.
- asguy 4y ago
  - Banana699 4y ago
    The only one coping here is that who doesn't understand VMs and language research enough and retreats into childish "it was just a joke lol" remarks when out of their depth. Incidentally, I write all 3 of C, C++ and x86 assembly, which is why I understand how braindead and unfit for human usage they are.
    - asguy 4y ago
      I didn't say I was "just joking", but calling C++ "unsafe" was definitely something I think was funny to say. > Incidentally, I write all 3 of C, C++ and x86 assembly, which is why I understand how braindead and unfit for human usage they are. I can't take you seriously when you make statements like this. You have to be trolling.
- deleted 4y ago
  [deleted]
- astrange 4y ago
  > PS. the worst C++ code is still a hell of a lot more safe than the best C code. What? For safe code you need to be able to audit it for logic errors, which you can't do if you can't understand what it does by reading it. That's why especially fancy code is banned in projects like Linux.

Except for most of deno that's written in Unsafe C++. https://v8.dev/ https://v8.dev/

by asguy 4y ago

Except for most of deno that's written in Unsafe C++. https://v8.dev/ https://v8.dev/

A JS runtime is a lot more than the core engine, or else nodejs is just a thin wrapper over V8 as well, which is obviously absurd. So without a count of the source lines for each language's portion of the implementation (very rough but acceptable first approximation of how much is implemented in each), you can't claim C++ is doing most of the heavy lifting and be taken seriously. PS. the worst C++ code is still a hell of a lot more safe than the best C code. This is easy to convince yourself of by noting that C++ mostly supersets C and only deviates to add more safety and static checking, not less. So it's a strict improvment over C, not by a lot, but an improvment nonetheless. Here are other examples for VMs not written in any of those 2 braindead languages though: [1] Bun : JS runtime in Zig. https://bun.sh/ https://bun.sh/ [2] Squeak : Smalltalk VM written in Smalltalk. http://www.vpri.org/pdf/tr1997001_backto.pdf http://www.vpri.org/pdf/tr1997001_backto.pdf [3] PyPy : Not actually a single VM but an entire framework\toolchain to write VMs, most famous of which is one for Python. The language used to write VMs for the framework is a subset of python called Rpython. https://doc.pypy.org/en/latest/ https://doc.pypy.org/en/latest/ [4] Maxine Virtual Machine : a JVM written entirely in Java. It's not the only one. https://en.wikipedia.org/wiki/Maxine_Virtual_Machine https://en.wikipedia.org/wiki/Maxine_Virtual_Machine ; https://news.ycombinator.com/item?id=15733645 https://news.ycombinator.com/item?id=15733645 Modern VM research is far beyond the 50 year old assembler that thinks itself a programming language. The future is here, just not very evenly distributed.

asguy 4y ago
- Banana699 4y ago
  The only one coping here is that who doesn't understand VMs and language research enough and retreats into childish "it was just a joke lol" remarks when out of their depth. Incidentally, I write all 3 of C, C++ and x86 assembly, which is why I understand how braindead and unfit for human usage they are.
  - asguy 4y ago
    I didn't say I was "just joking", but calling C++ "unsafe" was definitely something I think was funny to say. > Incidentally, I write all 3 of C, C++ and x86 assembly, which is why I understand how braindead and unfit for human usage they are. I can't take you seriously when you make statements like this. You have to be trolling.
deleted 4y ago
[deleted]
astrange 4y ago
> PS. the worst C++ code is still a hell of a lot more safe than the best C code. What? For safe code you need to be able to audit it for logic errors, which you can't do if you can't understand what it does by reading it. That's why especially fancy code is banned in projects like Linux.