Any HASHDICT_VALUE_TYPE about hashdict.c HOT 2 OPEN

@senyai I think -1 will work for void* because I do not think that could possibly be a valid pointer in either 32 or 64 bit addressing systems, but you're right something have to be done about this magic number, maybe we could introduce a constant.

from hashdict.c.

I support this feature request, as it will not work for types like structs (kinda weird as you should use a pointer) but for UNIONS there is some problems, as you need to access a "field" (or interpretation of data). Maybe something in the lines of

#define HASHDICT_DEFAULT_ASSIGNMENT_OPERATION node->value.f64 = 0.

Thank you for the great work!

from hashdict.c.