Can't use function with same name as module?

[Shriramana Sharma]

On Tuesday, 17 October 2017 at 08:26:12 UTC, Daniel Kozak wrote:
> You can:
> import fun : fun;

Yes I found this but it is unnecessarily verbose.

At the same time I also find that it is possible to declare a 
struct or class with the same name as module:

str.d:
struct str { int a; }

strmain.d:
import str;
void main() { str var; var.a = 2; }

cla.d:
class cla { int a; }

clamain.d:
import cla;
void main() { auto var = new cla; var.a = 2; }

$ dmd -ofstr str.d strmain.d
$ dmd -ofcla cla.d clamain.d

Problem only with function. If there can be a class or struct 
then what's the problem with function? Doesn't look like any of 
the problems which "will come and bite you later" in this case…