Public class ArrayEx extends Array

Question

Hi, I'm very bad at OO programming, but I'm trying to learn.
I want to add some functions to my Arrays, like checking if
arrays contain a value (indexOf can be equal to 0, which is false,
though actually I'm used to the loose data typing of as2, so this
may not be quite true. Bear with me though, I want to learn how to
extend a class). So I'm trying to write a class that extends the
basic Array class.
I am confused about the constructor, I want to mimic the
behaviour of the Array class but I'm not sure if I need to write
functions for each method of Array. Since my ArrayEx extends the
Array class it should inherit the array functions right? So it
should already have .pop() and .push() ext. defined? How should I
write my constructor to store the data the same way as the Array
class does though?
Is there somewhere I can look at the internal Array class to
figure out how it does it?
What I have written so far appears at the bottom of the
message. I include questions as comments.
I hope someone can help me out. I'm sorry if I'm asking stuff
that seems obvious. Thanks for your time.
Jon

Answer 1

I've found the solution to my second set of problems and
since I chose to trouble you all with the question I thought I'd
post the answer.
First problem, I had declared the ArrayEx class as dynamic
but not as public. Should read;
dynamic public class ArrayEx extends Array{
Second problem. An empty constructor function, by default,
calls the parent constructor function with no arguements. Since I
wanted to construct my new array class like the default array class
i had to add some code to handle that.
So here is the working class;