Programmer Humor

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got him (lemy.lol)

submitted 6 months ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 6 months ago (8 children)

A single match statement inside a function inside an impl is already 4 levels of indentation.

How about this?

The preferred way to ease multiple indentation levels in a switch statement is to align the switch and its subordinate case labels in the same column instead of double-indenting the case labels. E.g.:

switch (suffix) {
case 'G':
case 'g':
        mem <<= 30;
        break;
case 'M':
case 'm':
        mem <<= 20;
        break;
case 'K':
case 'k':
        mem <<= 10;
        /* fall through */
default:
        break;
}

I had some luck applying this to match statements. My example:


let x = 5;

match x {
5 => foo(),
3 => bar(),
1 => match baz(x) {
	Ok(_) => foo2(),
	Err(e) => match maybe(e) {
		Ok(_) => bar2(),
		_ => panic!(),
		}
	}
_ => panic!(),
}

Is this acceptable, at least compared to the original switch statement idea?

[–] [email protected] 2 points 6 months ago (2 children)

i personally find this a lot less readable than the switch example. the case keywords at the start of the line quickly signify its meaning, unlike with => after the pattern. though i dont speak for everybody.

[–] [email protected] 0 points 6 months ago* (last edited 6 months ago) (1 children)

How about this one? it more closely mirrors the switch example:

match suffix {
'G' | 'g' => mem -= 30,
'M' | 'm' => mem -= 20,
'K' | 'k' => mem -= 10,
_ => {},
}

How about this other one? it goes as far as cloning the switch example's indentation:

match suffix {
'G' | 'g' => {
	mem -= 30;
        }
'M' | 'm' => {
	mem -= 20;
        }
'K' | 'k' => {
	mem -= 10;
        }
_ => {},
}

[–] [email protected] 2 points 6 months ago

the problem is that, while skimming the start of each lines, nothing about 'G' | 'g' tells me that its a branch. i need to spend more time parsing it. mind you, this may simply be a problem with rust's syntax, not just ur formatting.

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