Rory McGuire wrote:
> On Tue, 22 Jun 2010 23:37:59 +0200, Andrei Alexandrescu
> <[email protected]> wrote:
>
>> Walter, can we require a semicolon please?
> +1
>
> With the semi colon missing its as bad as:
> for (;i<100;i++);
> writeln(i);
>
> esp. with large amount of code
>
>> Andrei
>
> Rory
It's not that bad.
for(; i < 100; ++i);
writeln(i);
would be a bug (if it were legal) because you'd expect the writeln() to be
part of the loop when it isn't. The loop wouldn't be run like you'd expect
it to, and it's hard to catch.
do
{
...
} while(test)
does not have that problem. The problem you run into is this:
do
{
...
}
while(test)
{
...
}
If you're _really_ not paying attention, you'd think that the second set of
braces started a while loop. But since you'd have to have way more spacing
than makes sense for it to happen, it becomes way more obvious and is not
the same level of problem. However, I do think that it _is_ a problem, and
the above example could definitely be confusing if you're just quickly
scanning over code.
I don't see any real reason to allow the lack of semicolon, and I do think
that it's a problem, but I don't think that it's a problem on the same level
as allowing a semicolon to be used as an empty body for an if statement or
loop.
- Jonathan M Davis
