On Wednesday, 7 August 2013 at 07:11:58 UTC, SteveGuo wrote:
I like the concept of interface, It enforces its successors to
implement some necessary methods.
Please take a look at the following example:
device.d
---------------------------------
interface device
{
// I want the three methods implemented by its successors
void PowerOn();
void PowerOff();
void Reset();
string signature; // This is not allowed in D, but every
device should has a signature.
}
Why it doesn't support non-static members?
Actually in many cases, we need an interface which needs
enforce its successors to implement necessary methods,
meanwhile it needs has its own non-static members.
Use properties. Interfaces cannot require fields but can require
methods. A property is a getter and setter method that wraps a
field.
So instead ing string signature; use @property string signature();
Then for all practical purposes you can treat it as a field.
