Menu
When unboxing takes place there is the copy of boxed value into an appropriate variable type but what happens at the memory location of the boxed copy on heap. Is boxed copy remain at that location and cover memory on heap?
303
Boxing is the process of converting a value type to the type object or to any interface type implemented by this value type. When the common language runtime (CLR) boxes a value type, it wraps the value inside a System. Object instance and stores it on the managed heap. Unboxing extracts the value type from the object.
The concept of boxing and unboxing underlies the C# unified view of the type system, in which a value of any type can be treated as an object. The advantage of boxing is that you can pass, say, an integer around as an object. The advantage of unboxing is you get you native integer performance back.
Unboxing In C# The process of converting a Reference Type variable into a Value Type variable is known as Unboxing. It is an explicit conversion process. Example : int num = 23; // value type is int and assigned value 23 Object Obj = num; // Boxing int i = (int)Obj; // Unboxing.
How to prevent boxing & unboxing: Use ToString method of numeric data types such as int, double, float etc. Use for loop to enumerate on value type arrays or lists (do not use foreach loop or LINQ queries) Use for loop to enumerate on characters of string (do not use foreach loop or LINQ queries)
Is boxed copy remain at that location and cover memory on heap?
Yes. After all, there could be other references to it:
object o1 = 5;
object o2 = o1;
int x = (int) o1;
x = 10;
Console.WriteLine(o2); // Still 5
Boxed values act like normal objects, in terms of being eligible for garbage collection when there are no more strong references to them.
171
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
