What does func!thing mean?

[bearophile]

ProgrammingGhost:

> As if split.map was the template parameter. How does it know if 
> split isn't a class (or if d has them, namespace) and map is a 
> static function? Thats why it confused me.

D doesn't have namespaces, it has modules and packages. map is a 
higher order function that returns a lazy templated range, a 
templated struct.

My suggestion is to start from simpler things (simpler syntax) 
and go up on from there. If you start from the end, you will be 
confused :-)

Bye,
bearophile