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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

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
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
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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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