269
all 42 comments
sorted by: hot top controversial new old
[-] dauerstaender@feddit.de 49 points 2 years ago

Unsafe block detected. Extermination initiated. There is no hiding from memory safety!

[-] 30p87@feddit.de 39 points 2 years ago

Personally,

echo Hello World!
[-] pranaless@beehaw.org 30 points 2 years ago
use std::process::Command;

fn main() {
    Command::new("sh")
        .arg("-c")
        .arg("echo Hello World!")
        .spawn()
        .unwrap();
}

Like this?

[-] 30p87@feddit.de 10 points 2 years ago

No, more like

use std::process::Command; fn main() { Command::new("sh").arg("-c").arg("echo Hello World!").spawn().unwrap(); }

.
Just a little bit shorter, as it seems /s

[-] funkajunk@lemm.ee 8 points 2 years ago
[-] 30p87@feddit.de 6 points 2 years ago

I did too. Multiple times in fact, I had to look at the other Rust code!

[-] TadoTheRustacean@programming.dev 2 points 2 years ago

Isn't echo a shell builtin?

[-] pranaless@beehaw.org 1 points 2 years ago

Yes and no. While coreutils does provide an echo binary, shells also have a built-in for optimisation purposes.

At first I had the code calling the binary directly, but then changed it to spawning a shell (and so using the builtin). It's very cursed either way.

[-] umbraroze@kbin.social 20 points 2 years ago

Oh you fancy PC people and your fancy syscall instruction.

I still don't know why I could remember jsr $ab1e. I didn't even write that much assembly.

[-] AVincentInSpace@pawb.social 1 points 2 years ago

That looks like a 6502 instruction. What system is it from?

[-] r00ty@kbin.life 19 points 2 years ago

Or, you could just go the whole hog. Create your own simple CPU emulator, design a basic 8bitesque CPU, give it an output port that is the console, and load up some basic ASM to cycle through Hello World to the console port.

[-] xmunk@sh.itjust.works 17 points 2 years ago

System.out.println

[-] starman@programming.dev 17 points 2 years ago

Console.WriteLine("Hello World!");

[-] DumbAceDragon@sh.itjust.works 15 points 2 years ago

echo "Hello world"

This is different from the other two echos here, this is Nim not Bash.

[-] Speiser0@feddit.de 14 points 2 years ago* (last edited 2 years ago)

Definitely left. Right one won't be optimized. (And there are ~~so many~~ some mistakes in your inline asm...)

[-] TadoTheRustacean@programming.dev 1 points 2 years ago
[-] Speiser0@feddit.de 6 points 2 years ago

Mostly the missing listing of clobbered registers. Other than that it's mostly just that you're doing useless things, like manually putting the stuff into the registers instead of letting the compiler do it, and the useless push and pop. And the loop is obviously not needed and would hurt performance if you do every write like that.

asm!(
"syscall",
in("rax") 1,
in("rdi") 1,
in("rsi") text_ptr,
in("rdx") text_size,

)

("so many" was inappropriate, sorry.)

[-] TadoTheRustacean@programming.dev 1 points 2 years ago

I am hopeless at getting the text_ptr simpler than i64::from_str_radix(&format!("{:p}", my_string)[2..], 16).unwrap(); How can i get it the normal way?

[-] Speiser0@feddit.de 2 points 2 years ago

Just use str::as_ptr().

Here's an example (disclaimer: I haven't used inline asm in rust before, expect issues): https://godbolt.org/z/sczYGe96f

[-] nonearther@lemmy.ml 8 points 2 years ago* (last edited 2 years ago)

console.log("Hello World!")

[-] cypherpunks@lemmy.ml 8 points 2 years ago
[-] lugal@sopuli.xyz 7 points 2 years ago
def main(): 
    print("Hello world") 
[-] MonkderZweite@feddit.ch 5 points 2 years ago* (last edited 2 years ago)

plan 9 cat vs GNU longcat meme

edit: reddit image linking is broken?

[-] AMDIsOurLord@lemmy.ml 4 points 2 years ago

Well, the GNU version does more and is more documented. The Plan9 code is frankly shitC, even for 1980z

But this monstrosity is something else

[-] 257m@sh.itjust.works 1 points 2 years ago

Plan 9 does the job. GNU is better for the end user. But if I had to maintain that stuff I would definitely want to maintain the Plan 9 code and not the GNU code.

[-] MonkderZweite@feddit.ch 0 points 2 years ago

Of course, not always is shorter better.

[-] rhpp@programming.dev 2 points 2 years ago

reddit image linking is broken?

Well you didn't link to a reddit image, you linked to Google image search result page which is not an image.

[-] MonkderZweite@feddit.ch 0 points 2 years ago

I did that because the image didn't show in reddt.

[-] rhpp@programming.dev 3 points 2 years ago

Looks like you need to insert the raw image link, not Reddit's media wrapper link.

plan 9 cat vs GNU longcat meme

[-] MonkderZweite@feddit.ch 0 points 2 years ago

Oh, so it's only my browser setup that doesn't show it.

[-] 257m@sh.itjust.works 5 points 2 years ago* (last edited 2 years ago)
#include <stdio.h>

int main(int argc, char** argv)
{
    printf("hello, world");
}
[-] DNOS@reddthat.com 5 points 2 years ago* (last edited 2 years ago)

Ec Emm this side is the best one ....

++++++++[< +++++++++>-]<. ++++[<+++++++>-]<+. +++++++.. +++.

++++++[<+++++++>-]<++. ------------. ++++++[<+++++++++>-]<+. <. +++. ------. --------.

++++[<++++++++>-]<+.

[-] raubarno@beehaw.org 4 points 2 years ago

Why do you call write() for every char? You can always just pass a pointer with its length.

[-] TadoTheRustacean@programming.dev 1 points 2 years ago

I am not skilled enough to do that ngl

[-] sj_zero@lotide.fbxl.net 4 points 2 years ago

? "Hello World"

[-] cypherpunks@lemmy.ml 3 points 2 years ago* (last edited 2 years ago)

dc <<<'10435358689859 70511561 11297399 23 5 3 2 ******P'

note: lemmy's "smart quotes" vs its input sanitization required me to code-format the second half of that line (and not the first half) to make it copy+paste runnable.

[-] verstra@programming.dev 3 points 2 years ago

Camel case?

this_is_not_going_to_be_a_serious_debate

[-] SpaceNoodle@lemmy.world 3 points 2 years ago
echo Hello World
[-] Cwilliams@beehaw.org 3 points 2 years ago

I thought the whole point of rust macros was to abstract away the scary asm at zero cost!

[-] idunnololz@lemmy.world 1 points 2 years ago

Hello, world!

[-] cypherpunks@lemmy.ml 0 points 2 years ago* (last edited 2 years ago)

base64 -d <<<SGVsbG8gV29ybGQhCg==

this post was submitted on 31 Oct 2023
269 points (89.9% liked)

Programmer Humor

24650 readers
282 users here now

Welcome to Programmer Humor!

This is a place where you can post jokes, memes, humor, etc. related to programming!

For sharing awful code theres also Programming Horror.

Rules

founded 2 years ago
MODERATORS