Apr 10, 2021 · Java allows us to cast variables of one type to another as long as the casting happens between compatible data types. For example you can cast a String as an Object and similarly an Object that contains String values can be cast to a String. Example. Let us assume we have an HashMap that holds a number of ArrayList objects. If we write code ...

Aug 9, 2023 · I am trying to cast (Windows + K) my laptop screen on my TV screen, and the picture is choppy and pixelated whenever there's motion on screen. My laptop is an LG Gram 17 with 16:10 aspect ratio. My TV

Mar 19, 2023 · When I use Cast to Media in Edge on a Windows 11 laptop, my laptop screen shows on the TV but audio sounds on both laptop and TV with a time lag between them.

Jul 20, 2015 · Casting pointers is usually invalid in C. There are several reasons: Alignment. It's possible that, due to alignment considerations, the destination pointer type is not able to represent the value of the source pointer type. For example, if int * were inherently 4-byte aligned, casting char * to int * would lose the lower bits. Aliasing.

See A comparison of the C++ casting operators. However, using the same syntax for a variety of different casting operations can make the intent of the programmer unclear. Furthermore, it can be difficult to find a specific type of cast in a large codebase.

Dec 16, 2011 · Casting is very important in database operations, for instance. For example on a parameterized PDO query, there will be a struggle sometimes for the parser to realize it is a number and not a string, and then you end up with a 0 in an integer field because you did not cast the string to an int in the parameter step.

I used to think that reinterpret_cast is OK for e.g. casting pointers to and from integer types (like e.g. DWORD_PTR), but to cast from a void* to a BYTE*, isn't static_cast OK? Are there any (subtle?) differences in this particular case, or are they just both valid pointer casts?

Sep 25, 2015 · A dynamic cast requires you to do a type check, that is, the runtime will check if the object you are casting to will be of the type. After all, you're casting down the inheritance tree, so you might as well cast to something else completely. If this is the case, you'll end up with an InvalidCastException. Because of this, dynamic casts require ...

Jun 9, 2009 · Casting doesn't occur in code, as it does with the dynamic keyword, only the underlying data of the object gets converted. At compile-time we are still left to painstakingly figure out exactly what type our object might be, making this solution impractical.

Aug 1, 2013 · Casting from a derived to base class pointer/reference: This is so common and natural that the compiler will do it implicitly. If making it explicit increases readability, the cast is a step forwards, not backwards! Casting from a base to derived class pointer/reference: Also common, even in well-designed code. (Example: heterogeneous containers.)