Interfaces

Added by Rodrigo B. de Oliveira, last edited by dholton on Aug 05, 2005  (view change)

Interfaces are introduced throught the interface keyword:

interface IFoo:
   pass

Interface methods don't need to have a body:

interface IUnknown:
    def QueryInterface(id as System.Guid) as object

But if they do it must be empty:

interface IFoodMachine:
    def Spam():
        pass

If a method in a interface does not declare a return type it is assumed to be void since there's no body with a return statement where to infer the type from. Thus the above interface declaration is equivalent to the following one:

interface IFoodMachine:
    def Spam() as void

Interfaces can extend other interfaces:

interface ImALumberjackAndImOk:
    def SleepAllNight()
    def WorkAllDay()

interface IWishIdBeenAGirlie(ImALumberjackAndImOk):
    def JustLikeMyDearPappa()

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