2D Arrays, or Something?

[[Gandalf]]

I'm just a bit confusled right now, having an exam and the sort tomorrow.
Let's say I had this:

code:

var bullet : flexible array 1 .. 0 of     record         x, y     end record

How would I add a say, bullet(2) so that I don't have to copy the whole thing and rename the new bullet to bullet2. So pretty much what I'm asking is, how would I shorten something like this:

code:

var bullet : flexible array 1 .. 0 of     record         x, y : real     end record var bullet2 : flexible array 1 .. 0 of     record         x, y : real     end record

Thanks.

[Bacchus]

Ok, now I'm a bit confusled about what you mean. Do you mean like a shorter way of making another array with the same record?

Turing:

type positions :     record         x, y : real     end record var bullet : flexible array 1 .. 0 of positions var bullet2 : flexible array 1 .. 0 of positions

Or do you mean adding another bullet to your array?

Turing:

var bullet : flexible array 1 .. 0 of     record         x, y : real     end record new bullet, 2

Or do you mean like adding another dimension to the flexible array? Please explain a bit more.

[lyam_kaskade]

code:

type foo :     record         x, y : int     end record var bullet : flexible array 1 .. 0 of foo var bullet2 : flexible array 1 .. 0 of foo

[/code]

[Cervantes]

Well, you can make it into a type and then create different variables:

code:

type obj :      record          x, y, : real      end record var bullet : flexible array 1 .. 0 of obj var bullet2 : flexible array 1 .. 0 of obj

But if you've got a flexible array of bullets, why are you making bullet and bullet2? In any case, if you must do that, you could try a 2D array.

code:

type obj :     record         x, y : real     end record var bullet : flexible array 1 .. 0, 1 .. 0 of obj

EDIT: 2 posts got there before me. Yee-gawds!

[[Gandalf]]

Ya, thanks - I was forgetting about types

Quote:

But if you've got a flexible array of bullets, why are you making bullet and bullet2?

Well, they're not two different bullets, they're two kinds of bullets going in different directions.

[MysticVegeta]

doh! there can be a flexible array with mutiple dimension, jeez and all this time i have been sleeping

[Cervantes]

I was pressured into adding that to the tutorial. Check it out

[Bacchus]

Even though in your Tutorial Cervantes, you list some basic rules... Like

Quote:

In a 2D array, if you leave one upper bounds alone, you can do whatever you want to the other bounds.

That doesn't work Try it out:

code:

var foo:flexible array 1..3,1..2 of int new foo,3,3

There is a bit of a way around this, takes up a bit of space thought. Just create a new array (doesn't have to be flexible) and store the orginal array in that then change the dimension to 0 and back to what you want before restoring the original array's values. lol

[Cervantes]

Ooh, thanks for that, Bacchus. It's updated.

[MysticVegeta]

Bacchus wrote:

Just create a new array (doesn't have to be flexible) and store the orginal array in that then change the dimension to 0 and back to what you want before restoring the original array's values. lol

i see i see, pretty nifty.I think the reason they cant make it 3, 3 is because turing doesnt know the flexiblility of the elements of each of the dimensions of the flexible array.

[Cervantes]

Bah! This is not so pretty!

Turing:

var list : flexible array 1 .. 3, 1 .. 2 of int for i : 1 .. upper (list, 1)     for j : 1 .. upper (list, 2)         list (i, j) := i * j     end for end for var tempArr : array 1 .. upper (list, 1), 1 .. 4 of int for i : 1 .. upper (tempArr, 1)     for j : 1 .. upper (tempArr, 2)         if i <= upper (list, 1) & j <= upper (list, 2) then             tempArr (i, j) := list (i, j)         else             tempArr (i, j) := minint %flag         end if     end for end for new list, upper (list, 1), 0 new list, upper (list, 1), upper (tempArr, 2) for i : 1 .. upper (list, 1)     for j : 1 .. upper (list, 2)         %if tempArr (i, j) ~= minint then             list (i, j) := tempArr (i, j)         %end if     end for end for for i : 1 .. upper (list, 1)     for j : 1 .. upper (list, 2)         put list (i, j)     end for end for

I wanted to make a procedure of it, but it's a syntax error to do this:

code:

proc foo (var arr : flexible array 1 .. *, 1 .. * of int)

Gandalf, my apologies for taking over your thread. I'll leave if you want.

[[Gandalf]]

No, it's alright . You always learn new things, and these kinds of discussions are useful. Trying to do what Turing cannot accept, using Turing . Maybe you'll even come up with something for Stargates project.

Besides, its nice to have a long topic!