foreach (x; a .. b) and foreach_reverse (x; a .. b) should be disallowed

[Christopher Wright]

grauzone wrote:
> Look at this for example:
>  > writefln("%s", is(typeof(rtzx) == char));
> This compiles even if rtzx doesn't exist. But you probably wanted to 
> check the type of rtzx, not it if rtzx exists. If you mistyped rtzx, the 
> compiler will never tell you.

You can do 'is(typeof(rtzx)) && is(typeof(rtzx) == char)', or wrap it in 
a template.