Deep runtime internals, memory models, distributed design, concurrency failure modes, and architectural decisions.
virtual inheritance. A virtual base class's members are placed at the very end of the object's layout, and accessing them requires a virtual-base offset lookup inside the VTable, avoiding duplicate subobjects.C* to a base pointer B* (where B is the second parent) requires the compiler to add a byte offset to the pointer address.this pointer must be adjusted to point directly to B's start address; otherwise, B's methods would read A's variables as if they were B's.List<? extends Animal>). Reading is safe because everything returned is an Animal, but writing is unsafe.List<? super Dog>). Writing is safe because you can write a Dog or its subclass, but reading only yields Object.List<Animal>). You can only assign exactly the declared type.You've completed the 5 free sample questions. Get unrestricted lifetime access to every question, model answer, implementation challenge, and all 27+ technologies for a single payment.
One-time settlement () · Lifetime access · Zero subscription