Re: Threads across programming languages

On Thu, 2 May 2024 05:45:29 +0200, Bonita Montero wrote:

Am 01.05.2024 um 22:34 schrieb Lawrence D'Oliveiro:
 

No, it is actually mostly C, with Rust making inroads these days.

 
C++ has superseeded C with that for a long time with Job offers.
Rust is a language a lot of people talk about and no one actually uses.

Fun fact: the Linux kernel (the world’s most successful software project),
originally entirely C-based, is now incorporating Rust-based development.
It never accepted C++.

And you don’t have to be doing “system-level” programming to be needing
event-driven paradigms.

 
If you make asnychronous I/O you need performance, and this isn't
possible with Python.

I/O performance certainly is possible with Python, and it has the high-
performance production-quality frameworks to prove it.

No they aren’t. You cannot easily define a C++ function that returns a
general function or class as a result, just for example.

 
function<void ()> fn();

Try it with something that has actual lexically-bound local variables in
it:

    def factory(count : int) :

        def counter() :
            nonlocal count
            count += 1
            return count
        #end counter

    #begin
        return counter
    #end factory

    f1 = factory(3)
    f2 = factory(30)
    print(f1())
    print(f2())
    print(f1())
    print(f2())

output:

    4
    31
    5
    32

Remember, we’re talking about maximizing I/O throughput here, so CPU is
not the bottleneck.

 
With io_uring you can easily handle millions of I/Os with a single
thread, but not with Python.

Debunked above.