c# - Direct casting vs 'as' operator? - Stack Overflow
Sep 25, 2008 · Custom implicit/explicit casting: Usually a new object is created. Value Type Implicit: Copy without losing information. Value Type Explicit: Copy and information might be lost. IS-A relationship: Change reference type, otherwise throws exception. Same type: 'Casting is redundant'. It feels like the object is going to be converted into ...
What are the rules for casting pointers in C? - Stack Overflow
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.
What is the difference between casting and coercing?
If your situation is slightly different, and you only want to select a different one of the value’s types, casting is the tool for the job. Casting simply indicates that you wish to operate on a particular type that a value includes. The difference at the code level varies from C# to IL. In C#, both casting and coercion look fairly similar:
java - How to cast an Object to an int - Stack Overflow
Jan 27, 2018 · Scenario 2: any numerical object. In Java Integer, Long, BigInteger etc. all implement the Number interface which has a method named intValue.
Difference between casting and using the Convert.To() method
Mar 14, 2013 · Casting a string to a double like that is not allowed C# which is why you get an Exception, you need to have the string converted (MSDN doc that shows acceptable conversion paths). This is simply because a string isn't necessarily going to contain numeric data, but the various numeric types will (barring null values).
c++ - Proper way of casting pointer types - Stack Overflow
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?
casting - Explanation of ClassCastException in Java - Stack Overflow
May 25, 2009 · 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 ...
c# - Why should casting be avoided? - Stack Overflow
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.)
Casting variables in Java - Stack Overflow
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 wouldn't have had otherwise.
c# - Casting a variable using a Type variable - Stack Overflow
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.