On Saturday, 30 March 2024 at 22:37:53 UTC, Carl Sturtivant wrote:
Incidentally, I tried
```D
extern typeof(foo) func;
```
to say that func was an actual function (`extern` so defined
elsewhere) whose type was the type of the function `int foo(int
num, string name, int);` so I can then use
`ParameterIdentifierTuple` on a function, not a type, but the
compiler said `bug1.d(5): Error: variable ``bug1.func`` cannot
be declared to be a function`. Seems unreasonable given the
implied semantics.
The word *variable* in that error message caught my eye and it
struck me that in some sense a function is a constant, not a
variable, we have function pointers for the last. So I tried
```D
enum typeof(foo) func = void;
```
to see if I could escape this difficulty. Sadly got exactly the
same error message, even though no variable was involved.
