It wouldn't work reliably in C# either. Both platforms allow you to inform the GC that now would be a good time to collect, but in both systems the GC can ignor

It wouldn't work reliably in C# either. Both platforms allow you to inform the GC that now would be a good time to collect, but in both systems the GC can ignore your advice. C# has structs which will try to allocate on the stack, but that is potentially a big (or impossible) refactoring on your program (unless you plan ahead).