what is the difference between static method of the class, module method and static method of the module?

[bearophile]

Alex Rønne Petersen:

> The static keyword has no effect on module functions, so 2 and 
> 3 are equivalent.

This problem is caused by DMD sloppyness regarding its management 
of attributes. A serious language doesn't accept a keyword like 
"static" where it has no meaning. It just causes confusion to 
newbies, and makes it harder to port D code across future D 
compilers...

Bye,
bearophile