/* English is not my native, and I tried to use Google translate.
I hope u will understand subtleties of questions */
3) closures: do the closures have any internal types that helps
to GC or are they (full closure memory block) scanned as in the
4) associative arrays:
any pair will be allocated at some memory block [hash, key,
value] as I imagine.
Will be precise-GC scan at every pair block only some fields of
SomeTypeWithRefsToClasses or full [pair-block]?
will be scanned string-key memory block: span-struct and\or chars