I’ve been trying to make a simple Service Locator class work but had a problem with bizarre linker errors, where the static member variable couldn’t be resolved.
After a lot of head scratching, fiddling and Googling I came across this website that explained it.
It’s fairly simple, if you have a class like this:
class foo { static int memberVar; ... };
you need to declare the member variable elsewhere, inside a real C++ file (not a header). Code like this will work:
static int foo::memberVar;
It’s a bit strange, but then again so are static classes.
