Hello,
I have a class that inherits from List(Of <custom>); what I want to know, is in this class, I have:
public class MyClass
Inherits List(Of MyObject)
public shadows sub Add(item as MyObject)
end sub
public shadows sub Insert(index as Integer, item as MyObject)
end sub
End Class
What I want to know is, in the AddRange/InsertRange implementation, will these methods call the base Add/Insert methods, or will it call the Add/Insert methods that I created above through shadowing, or doesn't it use these methods at all
Thanks.
Generic List's AddRange/InsertRange
Bearc0025
If InsertRange gets an ICollection<T> (like List<T>) as the argument, it can use Array.Copy to copy the list items into its internal storage array. Only if the argument is not an ICollection<T>, the Insert method will be called for each item, which is probably a lot slower than copying between arrays.
The AddRange methods calls InsertRange as well, so the same rules apply.
PS: You can check out the source code for these methods yourself using Reflector, which is what I did.