"Error: function expected before (), not module *module* of type void

[Adam D. Ruppe]

On Saturday, 22 September 2018 at 01:51:33 UTC, Samir wrote:
> main.d:
> import isPrime;
> void main() {
>     isPrime(x);
> }

You probably shouldn't name a module the same as a member anyway, 
and it should also have two names, like "module 
myproject.isprime;"

But the fix here is to just use the full name.

import isPrime;
void main() {
   isPrime.isPrime(x); // module_name.member_name
}

or change the import:

import isPrime : isPrime; // specify you want the same-named 
member

> Both files are in the same directory. When compiling main.d,

When compiling, be sure to pass both modules to it, or use the 
dmd -i if on a new version.

dmd -i main.d

or

dmd main.d isPrime.d

> main.d:(.text._Dmain[_Dmain]+0x83): undefined reference to 
> `_D7isPrime3isPFiZb'

this likely means you forgot to compile in the isPrime module, so 
use the above dmd lines