submitted 3 months ago by hairinmybellybutt to c/[email protected]
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[-] [email protected] 100 points 3 months ago

1998 called, it wants its java applets back

[-] [email protected] 21 points 3 months ago

If it’s WASM it’s here to stay.

[-] [email protected] 11 points 3 months ago

Did someone get Java applets working on WASM? Who is this maniac?

[-] [email protected] 7 points 3 months ago

Java applets idk, but we do have Flash

[-] [email protected] 81 points 3 months ago

You can already do this with the power of webassembly.

[-] Synthead 80 points 3 months ago

Look up WebAssembly.

[-] zacher_glachl 44 points 3 months ago

As a python developer and user of websites, please no. The web is already a slow mess and my laptop is already spinning up fans on some websites that really shouldn't do anything much more complicated than load text and images from a database and display them. CPython would make it exponentially worse. At least pick a sensible performance focused implementation.

[-] merthyr1831 1 points 3 months ago

it's cpython much slower than JS?

[-] zacher_glachl 2 points 3 months ago* (last edited 3 months ago)

Modern browser javascript engines are way faster than CPython. My guess as to why: For over 10 years, one of the largest companies in the world (Google) has had a vested interest in improving the performance of the V8 javascript engine running in chrome. V8 is highly optimized for performance.

By comparison, there has never been such a concerted push to optimize pure python execution in CPython. Generally, if you need to get something done quickly in python, you just call into a library written in C or Fortran.

[-] [email protected] 40 points 3 months ago* (last edited 3 months ago)

Yes. Please. Although something strongly typed would be even better. It's ridiculous the world runs on a language built in 2 weeks.

[-] [email protected] 40 points 3 months ago

It's also ridiculous to think it's still the same language that was built in two weeks, like absolutely no work was done in it over time.

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[-] [email protected] 27 points 3 months ago

Python is strongly typed, but it is also dynamically typed.

[-] [email protected] 9 points 3 months ago

TIL. Obviously I've avoided using it much.

So how does that work? Is there a few implicit conversions that are allowed, but if you really write something weird it will complain?

[-] [email protected] 11 points 3 months ago

Yes, it has no implicit conversions like JS or R. It does, however, allow you to not specify the type of a variable and even change it without complaining. Even if you add types these are only hints that won't generate errors unless you use external type checking (e.g. mypy).

[-] [email protected] 9 points 3 months ago


i = 5.0//2


throws an error because i is double and the list-index expects an integer.

so for it to work the code needs to look like this:

i = int(5.0//2)


meanwhile this works:


i= 'abcde'

[-] [email protected] 2 points 3 months ago

Isn't // integer division?

[-] [email protected] 3 points 3 months ago

It is but if you start with a float you get a float back.

[-] [email protected] 3 points 3 months ago

You're right, I did not know that. Thanks!

[-] [email protected] 1 points 3 months ago

Was really surprised by this too, because iirc Python 2 did not do this.

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[-] [email protected] 6 points 3 months ago

In python you always have the right type, cause everything is an object

[-] [email protected] 26 points 3 months ago

And yet somehow it evolved to become something that will last to the heat death of the universe.

I've grown used to it with time, though. Once you know it's "quirks", it's not so bad.

[-] [email protected] 4 points 3 months ago

I guess the internet just grew that fast. The first arrival took all and locked everybody in.

Now, we have just two browsers that are widely used, so maybe we do have an opportunity to go back and fix it. Go sounds like it's a pretty popular choice for statically typed, imperative high-level language.

[-] [email protected] 16 points 3 months ago

Honestly, given the context of a browser, Javascript's "Everything is better than crashing" philosophy does not seem too out-of-place. Yes, the website might break, but at least it would be theoretically usable still.

Yes, a statically typed language would help, but I'd rather not have one that is "these two types are slightly different, fuck you, have a segfault", but rather one that is slightly more flexible.

[-] [email protected] 4 points 3 months ago* (last edited 3 months ago)

Actually, that's a good point, in scripting fatal type errors can happen at runtime. I guess Python is the right choice then, given it's maturity and popularity, and then you can code the complex stuff in whatever you want via WASM like other people mentioned.

[-] [email protected] 2 points 3 months ago

Not even "not so bad", I would say that as a scripting language it's fantastic. If I'm writing any actually complex code, then static typing is much easier to work with, but if you want to hack together some stuff, python is great.

It also interfaces extremely easily with C++ through pybind11, so for most of what I do, I end up writing the major code base in C++ and a lightweight wrapper in Python, because then you don't have to think about anything when using the lib, just hack away in dynamically typed Python, and let your compiled C++ do the heavy lifting.

[-] [email protected] 24 points 3 months ago

Python is actually mostly strongly typed. Strongly (e.g. can't use a number as a string without explicitly converting it), but dynamically (can change type of variable at runtime). You probably would prefer a statically typed language and I agree.

[-] [email protected] 1 points 3 months ago* (last edited 3 months ago)

Alright, thanks for the help with terminology. I'm a bit confused about changing types at runtime. I thought a compiled or interpreted language stopped having types at runtime, because at that point it's all in assembly. (In this case of course it's scripting, which someone pointed out to me elsewhere)

[-] [email protected] 3 points 3 months ago

That's a compiled language, an interpreted language is translated to assembly at runtime, in pythons case: pretty much one line at a time.

Disclaimer: To the best of my knowledge, please correct me where I'm wrong.

[-] [email protected] 2 points 3 months ago* (last edited 3 months ago)

That's really only native compiled languages. Many popular languages, such as C#, Java, etc. Lie somewhere in between. They get compiled to intermediary byte code and only go native as the very final step when running. They run in a runtime environment that handles that final step to execute the code natively. For .NET languages that's the CLR (Common Language Runtime).

For .Net the process goes like this:

  • You write the code
  • Code is compiled to MSIL
  • At runtime when the MSIL is executing a JIT (just-in-time) compiler translates the MSIL into native code.
  • The native code is executed.

Java has a similar process that runs on the JVM. This includes many, many languages that run on the JVM.

~~JavaScript in the browser goes through a similar process these days without the intermediary byte code.~~ Correction, JS in modern browsers also follow this process almost exactly. a JIT compiler compiles to bytecode which is then executed by the browser's JS engine. Historically JS has been entirely interpreted but that's no longer the case. Pure interpreted languages are pretty few and far between. Most we think of as interpreted are actually compiled, but transparently as far as the dev is concerned.

Last, but certainly not least, Python is also a compiled language, it's just usually transparent to the developer. When you execute a python program, the python compiler also produces an intermediary bytecode that is then executed by the python runtime.

All that being said, I welcome any corrections or clarifications to what I've written.

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[-] [email protected] 5 points 3 months ago
[-] Zangoose 11 points 3 months ago
[-] [email protected] 2 points 3 months ago

Couldn't agree more.

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[-] [email protected] 29 points 3 months ago

laughs in WASM

[-] slazer2au 10 points 3 months ago

No, but that is because I can't do much scripting.

[-] [email protected] 20 points 3 months ago

´import scripting_abilities´

[-] slazer2au 11 points 3 months ago* (last edited 3 months ago)

Select * from stack_overflow where working_scripts is "closed (duplicate)"

[-] dzervas 3 points 3 months ago

you have a multi-billion cluster at your disposal it seems

[-] [email protected] 5 points 3 months ago
[-] [email protected] 3 points 3 months ago

Will that make Ren'Py VNs play natively on firefox? If not, I vote no

[-] mesamunefire 2 points 3 months ago

Yes I would give actual money to see this native and supported.

[-] [email protected] 4 points 3 months ago

Unfortunately that support would be worthless if only firefox does it.

[-] mesamunefire 1 points 3 months ago
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this post was submitted on 21 Nov 2023
255 points (90.2% liked)

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