So in this case it's always a downcast or more correctly, a narrowing conversion. 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 wouldn't have had otherwise You're not performing any kind of magic or conversion when performing casting, you're essentially telling the compiler trust me, i know what i'm doing and i can guarantee you that this. 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 objects and, if converted back, will compare equal to the original. Static cast is also used to cast pointers to related types, for example casting void* to the appropriate type
What is the best practice for casting between the different number types Types float, double, int are the ones i use the most in c++ An example of the options where f is a float and n is a doubl. 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, and have it somehow automatically figure out how to convert between the types.
Casting is the process of type conversion, which is in java very common because its a statically typed language 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 context of python code) Cast(str, x) simply returns x, but tells a type checker to pretend that the return value has type str, no matter what type x may actually have. How do i cast an int to an enum in c++ Enum test { a, b }
How do i convert a to type test::a?
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