Re: passing object reference to the method
On 2008-09-30 11:51:35 -0400, puzzlecracker <ironsel2000@gmail.com> said:
Say I pass an object of a class (reference value I suppose) to a
method, and I want to pass it by reference. Do I need to preappend
it with ref.
public interface IFoo{}
public class Foo:IFoo{
}
void FromHere()
{
Foo f=new Foo();
Here(ref f);
}
void Here(ref IFoo f )
{
//do something with f
}
Is ref redundant or error-prone. In my scenerio I have a lot of
overload for Here-like function,
and compiler screams that it cannot convert IFoo to char (latter
beeing void Here(ref char c) )
This usage of ref is not part of standard C++. If a function takes an
argument by reference that argument is marked as a reference like this:
void Here(IFoo& f)
and it's called with the object:
Foo f;
Here(f);
Note that this is different from what the above code is doing, since
Foo f= new Foo() creates a pointer. I have no idea what the meaning of
those 'ref' decorations is.
--
Pete
Roundhouse Consulting, Ltd. (www.versatilecoding.com) Author of "The
Standard C++ Library Extensions: a Tutorial and Reference
(www.petebecker.com/tr1book)
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