• Namespace (34/34) Sep 10 2013 Code:
• Andrej Mitrovic (24/25) Sep 10 2013 You will get a linker error when you try to use the function.
• Namespace (3/29) Sep 10 2013 Ah, thanks for explanation.

"Namespace" <rswhite4 googlemail.com> writes:

Code:
----
import std.stdio;

interface A {
public:
	final void bar();
}

class B : A {
	
}

void main()
{
	
}
----

No message.
But:

----
import std.stdio;

interface A {
public:
	void bar();
}

class B : A {
	
}

void main()
{
	
}
----

Gives the correct error message:
Error: class B interface function 'void bar()' is not implemented

Bug or feature?

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

 Bug or feature?

You will get a linker error when you try to use the function.

This is a feature, because you can implement this function later or
even in another module (and set mangling to match).

Example of the former:

-----
interface A {
public:
    final void bar();  // declaration

    /** ... */

    final void bar() { }  // implementation
}
-----

For the latter:

-----
interface A {
public:
    final void bar();
}

class B : A {
}

pragma(mangle, A.bar.mangleof)
void A_bar_impl(A _this) { }
-----

The mangle pragma feature is new in git-head.

"Namespace" <rswhite4 googlemail.com> writes:

On Tuesday, 10 September 2013 at 21:03:57 UTC, Andrej Mitrovic 
wrote:
 Bug or feature?

 You will get a linker error when you try to use the function.

 This is a feature, because you can implement this function 
 later or
 even in another module (and set mangling to match).

 Example of the former:

 -----
 interface A {
 public:
     final void bar();  // declaration

     /** ... */

     final void bar() { }  // implementation
 }
 -----

 For the latter:

 -----
 interface A {
 public:
     final void bar();
 }

 class B : A {
 }

 pragma(mangle, A.bar.mangleof)
 void A_bar_impl(A _this) { }
 -----

 The mangle pragma feature is new in git-head.

Ah, thanks for explanation.