this post was submitted on 06 Oct 2023
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Programming

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[–] [email protected] 18 points 1 year ago* (last edited 1 year ago) (1 children)

A semicolon ends a statement, and semicolon is a statement on its own. One that does nothing. That's why you can write

int i;
for (i = 0; i ᐸ 3; i++);

to set i = 3. You can use that pattern to find something in an iterator, etc. But I would prefer

int i = 0;
while (i ᐸ 3) {
   i++;
}

for readability.

[–] [email protected] 18 points 1 year ago* (last edited 1 year ago) (1 children)

Your less thans got HTML-escaped into < and I spent embarrassingly long trying to figure out what pointer magic you were demonstrating

[–] [email protected] 4 points 1 year ago (1 children)

Yeah, both Voyager and the normal lemmy web client escape the less-than sign. I tried it twice on both clients.

[–] [email protected] 17 points 1 year ago (2 children)

The loop will run to completion with no side effects. Unless it gets optimized away by the compiler or CPU.

[–] [email protected] 13 points 1 year ago

Now slap some commas in there and you can have side effects in the loop header.

Guaranteed to confuse :)

[–] [email protected] 3 points 1 year ago

It's actually ub, so it could also find the cure to cancer

[–] [email protected] 12 points 1 year ago

Might help if you add some sample code

[–] [email protected] 6 points 1 year ago (4 children)

Pro tip: for(;;) takes less to type thann while(true)

[–] [email protected] 21 points 1 year ago

My programs cause enough tears on their own without having to put them in the code itself.

[–] Joey 8 points 1 year ago

#define EVER (;;)

[–] [email protected] 1 points 1 year ago

As yes. Readability destroying anti-patterns. My old enemy

[–] [email protected] 1 points 1 year ago (1 children)

I still struggle to see how that's valid syntax

[–] [email protected] 1 points 1 year ago (1 children)
[–] [email protected] 2 points 1 year ago

Yes, I know. On the other hand, when you see people code-golfing C, this is on the light end of the spectrum

[–] [email protected] 1 points 1 year ago