(apologies in advance if this has been brought up already; a cursory search
suggested it had not)

One great feature of C# (and perhaps other OOP languages as well) is the 'override' keyword, used to indicate that a given function is intended to override some function in a base class.  I can't count how many bugs I've found in C++ code (mine and others') that could have been avoided if this were supported; it's very easy to change the signature of a virtual function in a base class and forget to update some derived class, resulting in a nasty, hard-to-spot bug.  Has some mechanism of this sort been considered for D?

Charles Nevill wrote:
> (apologies in advance if this has been brought up already; a cursory search
> suggested it had not)
> 
> One great feature of C# (and perhaps other OOP languages as well) is the
> 'override' keyword, used to indicate that a given function is intended to
> override some function in a base class.  I can't count how many bugs I've
> found in C++ code (mine and others') that could have been avoided if this
> were supported; it's very easy to change the signature of a virtual function
> in a base class and forget to update some derived class, resulting in a
> nasty, hard-to-spot bug.  Has some mechanism of this sort been considered
> for D?
> 

Yep...

see http://www.digitalmars.com/d/attribute.html

Override is described on that page.