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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

how can chip be made from sand
Eke Reply
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
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
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
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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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