"bearophile" <[email protected]> wrote in message
news:[email protected]...
| Larry Luther:
|
| > I did not get an error when building and running with DMD 2.042:
|
| I am using dmd v2.046, and I have taken the good habit of compiling
with -w (warnings on).
| It seems this error I see is a blocking warning. It's a warning badly
written, but do you agree it is saying something important? I presume your
code can lead to bugs. I don't know why this is a warning instead of a true
error...
|
| On your code it also complains for a missed "override" that is a good
thing that eventually will become obligatory even without -w.
|
| When you post here I suggest you to avoid using HTML and use pure text.
|
| Bye,
| bearophile
Ok, I've added -w to compilation commands and I've switched back to pure
text.
Given:
class A {
int x, y;
void copy (const A a) {
x = a.x;
y = a.y;
}
}
class B : A {
int z;
void copy (const B b) {
super.copy( b);
z = b.z;
}
}
A alpha = new A;
A bravo = new A;
B charlie = new B;
B delta = new B;
-------------------------------
I don't see the problem with A.copy vs B.copy.
alpha.copy( bravo) -- should execute A.copy
alpha.copy( charlie) -- should execute A.copy
charlie.copy( delta) -- should execute B.copy
charlie.copy( alpha) -- should execute A.copy
What am I missing?
Larry
