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Supplemental material

I recommend that you also study the other lessons in my extensive collection of online programming tutorials. You will find a consolidated index at www.DickBaldwin.com .

General background information

What is an ActionScript interface?

In an earlier lesson titled "Inheritance - The Big Picture" , I told you that unlike C++,

"ActionScript 3 does not support multiple inheritance. Instead it supports a different mechanism called an interface that provides most ofthe benefits of multiple inheritance without most of the problems."

I promised to explain the ActionScript interface in a future lesson, and that time has come.

What does the documentation have to say?

According to About interfaces ,

"Interfaces are a type of class that you design to act as an outline for your components. When you write an interface, you provide only the namesof public methods rather than any implementation. For example, if you define two methods in an interface and then implement that interface, theimplementing class must provide implementations of those two methods.

Interfaces in ActionScript can declare methods and properties only by using setter and getter methods; they cannot specify constants. The benefitof interfaces is that you can define a contract that all classes that implement that interface must follow. Also, if your class implements aninterface, instances of that class can also be cast to that interface."

According to Interfaces ,

"An interface is a collection of method declarations that allows unrelated objects to communicate with one another...

Interfaces are based on the distinction between a method's interface and its implementation. A method's interface includes all the information necessary to invoke that method, including the name of the method, all ofits parameters, and its return type. A method's implementation includes not only the interface information, but also the executable statements thatcarry out the method's behavior. An interface definition contains only method interfaces, and any class that implements the interface isresponsible for defining the method implementations...

Another way to describe an interface is to say that it defines a data type just as a class does. Accordingly, an interface can be used as a typeannotation, just as a class can. As a data type, an interface can also be used with operators, such as the is and as operators, that require a datatype. Unlike a class, however, an interface cannot be instantiated. This distinction has led many programmers to think of interfaces as abstract datatypes and classes as concrete data types."

According to this author...

An interface is like a class in which all of the methods are abstract, meaning that only their user interface is declared. Their behavior orimplementation is not defined. (Recall from an earlier lesson that it is not possible to declare an abstract method in an ActionScript class.All methods must be defined as concrete methods in ActionScript classes.)

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Object-oriented programming (oop) with actionscript. OpenStax CNX. Jun 04, 2010 Download for free at http://cnx.org/content/col11202/1.19
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