pansa2

89 ms·

1051.
by pansa2 6y ago
> It might make sense to develop a compiler that translates Python code directly to WebAssembly and sacrifice some compatibility for performance. This seems to be the author's preferred approach, but I'm not sure it would pro
1052.
by pansa2 6y ago
> It's no secret that I want a Python implementation for WebAssembly. [...] with the fact that both iOS and Android support running JavaScript as part of an app it would also get Python on to mobile. WebAssembly is not JavaScript.
1053.
by pansa2 6y ago
Yes! Reverse ranges in Python are awkward for this reason. The reverse of `range(0, 5)` (i.e. [0, 1, 2, 3, 4]) isn’t `range(5, 0, -1)`, it’s `range(4, -1, -1)`. I think it would be better if the end-points were “low” and “high” rather than
1054.
by pansa2 6y ago
What do you think about using the two different kinds of quote character for two different kinds of string literal? For example, double-quotes for literals that interpret escape sequences and do variable interpolation, and single-quotes for
1055.
by pansa2 6y ago
Squirrel [0] seems to have been used in a few places [1], but not many compared to Lua. There are also embeddable JavaScript implementations such as Duktape [2], and a lightweight Ruby in mruby [3]. [0] http://www.squirrel-lang.o
1056.
by pansa2 6y ago
There are many lightweight, embeddable scripting languages available, yet Lua remains dominant. This is despite the language being "quirky" at best (and "dreaded" at worst [0]). Is this just inertia, or is there a techni
1057.
by pansa2 6y ago
It would be interesting to know how many projects are using regular Lua vs LuaJIT, as the two implementations have diverged. When both were on version 5.1, there didn't seem to be any downsides to LuaJIT. Many Lua projects could benefi
1058.
by pansa2 6y ago
Yes, Lua doesn’t do “minor versions”. You can think of 5.4.0 as 54.0.0, and 5.3.5 as 53.0.5.
1059.
by pansa2 6y ago
> <close> is equivalent to golang's defer [...] except at the block level. Does that mean it’s the same as C#'s `using` and Python's `with`?
1060.
by pansa2 6y ago
The first two of those seem to be for regular Lua, not LuaJIT. Do any of them work without needing to load arbitrary bytecode, which is known to be insecure?
1061.
by pansa2 6y ago
I think there’s a difference between trying to prevent untrusted code from escaping a sandbox, and trying to prevent it from locking up the CPU. Lua is commonly used for scripting games. If I load an untrusted script into the game I’m playi
1062.
by pansa2 6y ago
Agreed. A lot of people seem to think x86 has some inherent bottleneck that switching to ARM will magically bypass. Single core performance is currently doubling every five years or so. We’re not about to see it double in the next 24 hours.
1063.
by pansa2 6y ago
Interesting, it’s written in “a custom language called Dinky that is based on and inspired by Squirrel”. Is it common for games to use custom scripting languages? I thought it would be more efficient to use an off-the-shelf language - Lua s
1064.
by pansa2 6y ago
> > OTOH there seems to be a rapid accumulation of features... > I think you're stretching your narrative a bit. They're working on a new GC algorithm... The thing is, according to the documentation [0], Nim already has
1065.
by pansa2 6y ago
> If you type hint the input as int, and somewhere in your code you pass in a string, you will get a warning in the IDE. Statically-typed languages can guarantee to get this right 100% of the time. Can type-checkers for a highly-dynamic
1066.
by pansa2 6y ago
> I'm surprised comprehensions in particular haven't spread to more modern languages. Comprehensions become unreadable quite quickly - even simple ones have to be read inside-out, and complex (especially nested) ones are much w
1067.
by pansa2 6y ago
> Annotation support was added in 3.0 However, support for type annotations, specifically, wasn’t added until Python 3.5 (via PEP 484).
1068.
by pansa2 6y ago
I agree that, in general, duck-typing is preferable. However in cases like this, where you really want to ensure the count of shares is a whole number, I can see an argument for `isinstance`. What I can’t understand is the argument that occ
1069.
by pansa2 6y ago
Because Python’s type annotations don’t prove anything. That’s why, for example, they can’t be used to increase the performance of the interpreter.
1070.
by pansa2 6y ago
In my experience, the people who love Python are those who are happy with dynamic typing - usually because they only use the language for small projects. When starting a large project, it would be better to skip Python altogether and use a
1071.
by pansa2 6y ago
I’d argue the opposite - that `isinstance` checks are idiomatic, whereas type annotations have not been widely adopted.
1072.
by pansa2 6y ago
Type annotations aren’t equivalent to this check, though, because they’re not enforced at runtime.
1073.
by pansa2 6y ago
I’ve heard PyPy’s JIT described as “meta-tracing - instead of tracing your code, it traces itself as it interprets your code”. Is that accurate? What are the pros & cons of this approach compared to a normal tracing JIT, e.g. LuaJIT?
1074.
by pansa2 6y ago
“Compile-time and runtime are less relevant notions than before-shipping and after-shipping” - Rich Hickey https://twitter.com/richhickey/status/1063086406980026370
1075.
by pansa2 6y ago
It looks like this will make Go a significantly more complex language. Despite Go's success over the last 10+ years, have its designers concluded that the language is too simple ? Is there no place for a simple statically-typed langua
1076.
by pansa2 6y ago
So this will replace Bootstrap 4, which was released in early 2018 and will reach end-of-life before the end of this year. [0] Could someone explain the target audience for a framework with this rate of churn? Are people really creating web
1077.
by pansa2 6y ago
What does gevent do - give Python something similar to Goroutines?
1078.
by pansa2 6y ago
Your post could be read as though you have two completely separate goals: 1. Explore Python, Ruby etc. 2. Find a good scripting language.
1079.
by pansa2 6y ago
Python libraries are distributed to other Python developers. Applications are distributed to end-users, who may not even know what Python is, let alone details of any Python installation on their machine.
1080.
by pansa2 6y ago
Thanks, I hadn’t heard of PyOxidizer before. Looks like a significant improvement over tools like PyInstaller and Shiv, which produce self-extracting executables that are slow and/or leave files hanging around after running.

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