I use dscanner to lint my code and find it helpful.
However, in GtkD there are several functions which take ref args,
and these confuse dscanner.
For example:
uint kv;
event.getKeyval(kv); // ref arg is updated here
dscanner incorrectly (but understandably) reports:
Variable kv is never modified and could have been declared
const or immutable.
If D allowed the _optional_ use of ref at the call site:
uint kv;
event.getKeyval(ref kv);
Then this would not only help dscanner, but also make it clear to
programmers that the argument could be modified.
(This is done in Rust with f(&mut arg), and I certainly find it
helpful.)
