Deep nesting vs early returns

[Nick Treleaven]

On Thursday, 4 October 2018 at 06:43:02 UTC, Gopan wrote:
>  I have seen people enclosing the function logic inside a 
> while(1) merely to stick on to single return at the end.
>
> while(1)
> {
> 	...
> 	break; //otherwise return would come here.
> 	...
> 	break;
> }
>
> return ...;

I think `switch (0) default:` is better, because it's not a loop 
so the intent is clear - no continue statements somewhere below 
(so it's also better than `do ... while (0);`). Also you might 
forget the final break statement with `while` and get an infinite 
loop.

This is an occasionally useful general pattern (I use early 
returns).