switch - Re: Improve "Improve Contract Syntax" DIP 1009

[Nick Treleaven]

On Thursday, 2 November 2017 at 20:37:11 UTC, user1234 wrote:
>     switch (i)
>         default: break;
> }
>
> you have 3 non-ambiguous and contiguous statements without a 
> block: a switch, a default case (the "free-floating" one) and a 
> break. Now why is this allowed is another story ;)

I've found a use for it - breakable blocks. (It's a bit neater 
than putting the label inside the block):

switch (1) default:
{
	auto x = foo();
	if (x == bar) break;
	auto y = x.baz();
	if (!y) break;
	y.writeln;
}

This avoids indentation from nested if statements instead of 
breaks. Although this is not ideal syntax, it's better than 
abusing a loop construct for something that's not a loop. Using a 
goto makes the code read less naturally as the label is after the 
block.