619
void * (sh.itjust.works)
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[-] rhpp@programming.dev 91 points 3 weeks ago

Actually void* just points to anything, with no regard to the type of that thing. Pointing to the void is more accurately described by NULL pointer.

[-] tunetardis@lemmy.ca 37 points 3 weeks ago

Fair, though I guess my interpretation was that void* is kind of like a black hole in that anything can fall into it in an unsettling way that loses information about what it was?

[-] frezik@midwest.social 34 points 3 weeks ago

"Allow me to combine the worst feature of strong typing with the worst feature of dynamic typing".

[-] riodoro1@lemmy.world 25 points 3 weeks ago

Result: one of the most if not the most popular programming languages.

[-] marcos@lemmy.world 4 points 3 weeks ago

But we need dynamic types!

...hold my beer...

[-] neo@lemy.lol 7 points 3 weeks ago

So, when I want the void to point back at me, do I have to loop over void* or over NULL?
And how many iterations?

[-] programmer_belch@lemmy.dbzer0.com 6 points 3 weeks ago

For the void to point back at you just dereference the NULL pointer

[-] sus@programming.dev 2 points 3 weeks ago* (last edited 3 weeks ago)

as many iterations as it takes

void* x = &x;
char* ptr = (char*)&x;

while (1) {
    printf("%d\n", (unsigned int)*ptr);
    ptr--;
}
[-] mox@lemmy.sdf.org 4 points 3 weeks ago

In other words, void refers to the typing of the pointer, not a particular value that might be present at its target.

(But I can see how someone might find it confusing.)

[-] Olgratin_Magmatoe@lemmy.world 13 points 3 weeks ago* (last edited 3 weeks ago)

Void star labs/Zach Freedman moment

[-] xia@lemmy.sdf.org 3 points 3 weeks ago

There are no ints in the void, only... death...

this post was submitted on 22 May 2024
619 points (100.0% liked)

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