Structs and Classes

[Mike Parker]

On 1/31/2012 7:45 PM, Mars wrote:
> Hello everybody.
> I couldn't really think of a good title for this. It's just a little
> question, about this example code:
> http://pastie.org/private/4xqtze47dlx9fy9pn53sq
>
> Apperantly I get a copy of Bar, when I call bar(), and it doesn't modify
> the actual variable of the object. But if I define Bar as a class, it
> works as expected (by silly me). Why is that? And if I want to use a
> struct for this, is the passing around of a pointer (like in the
> example) correct?
>
> Mars

Structs are value types, so when you return one from a function or pass 
as a function argument, it's actually a copy that gets handed around. 
Classes are reference types, so when you move those around it's very 
much like using a pointer. To get reference semantics on a struct, you 
have either use it as a pointer or use the ref keyword to create a 
reference.