Jun 23, 2013 · There are rules about casting pointers, a number of which are in clause 6.3.2.3 of the C 2011 standard. Among other things, pointers to objects may be cast to other pointers to …

2 Your problem is not the lack of "dynamic casting". Casting Integer to Double isn't possible at all. You seem to want to give Java an object of one type, a field of a possibly incompatible type, …

Mar 13, 2011 · Casting in Java isn't magic, it's you telling the compiler that an Object of type A is actually of more specific type B, and thus gaining access to all the methods on B that you …

Could you add a small example of why you're using the casts in the first place to the question, or perhaps start a new one? I'm kinda interested in why you would need the cast for unit testing …

Mar 15, 2011 · Casting can be used to clearly state that you are calling a child method and not a parent method. So in this case it's always a downcast or more correctly, a narrowing conversion.

Sep 25, 2008 · Direct Casting Types don't have to be strictly related. It comes in all types of flavors. Custom implicit/explicit casting: Usually a new object is created. Value Type Implicit: …

Jan 4, 2023 · 23 str(x) returns a new str object, independent of the original int. It's only an example of "casting" in a very loose sense (and one I don't think is useful, at least in the …

The C-style casts can do virtually all types of casting from normally safe casts done by static_cast<> () and dynamic_cast<> () to potentially dangerous casts like const_cast<> (), …

Aug 26, 2008 · Static cast is also used to cast pointers to related types, for example casting void* to the appropriate type. dynamic_cast Dynamic cast is used to convert pointers and references …

Nov 24, 2018 · The superficial answer to the question "why?" is that these simply are the rules of as expressions in Rust. Quoting from the Nomicon: Casting is not transitive, that is, even if e …