Computer Science Canada

Initializing A Multidimensional Array
Author:  drij [ Wed Oct 22, 2008 12:51 pm ]
Post subject:  Initializing A Multidimensional Array
This code will not run:
Turing:
const winTypes : array 1 .. 8 of array 1 .. 3 of array 1 .. 2 of int1
:= init (1, 3, 2, 3, 3, 3,
         3, 3, 3, 2, 3, 1,
         1, 3, 1, 2, 1, 1,
         1, 1, 1, 2, 1, 3,
         1, 2, 2, 2, 3, 2,
         2, 1, 2, 2, 2, 3,
         1, 3, 2, 2, 3, 1,
         1, 1, 2, 2, 3, 3)

I have no idea what's wrong with it. I think that I should be able to initialize this array but I get the error:
'init' value is the wrong type.
Author:  The_Bean [ Wed Oct 22, 2008 1:12 pm ]
Post subject:  Re: Initializing A Multidimensional Array
Your declaring your array wrong, the "of array" only needs to be a ",".

Turing:

const winTypes : array 1 .. 8 , 1 .. 3 , 1 .. 2 of int1
:= init (1, 3, 2, 3, 3, 3,
         3, 3, 3, 2, 3, 1,
         1, 3, 1, 2, 1, 1,
         1, 1, 1, 2, 1, 3,
         1, 2, 2, 2, 3, 2,
         2, 1, 2, 2, 2, 3,
         1, 3, 2, 2, 3, 1,
         1, 1, 2, 2, 3, 3)
Author:  [Gandalf] [ Wed Oct 22, 2008 2:12 pm ]
Post subject:  RE:Initializing A Multidimensional Array
The_Bean is right, however the way you are currently declaring the array could work too. After all, multidimensional arrays are just arrays of arrays. The problem is, you have a const that needs to be initialized prior to run time. You would have to explicitly use an array where each element is another array.
Author:  Tony [ Wed Oct 22, 2008 2:44 pm ]
Post subject:  RE:Initializing A Multidimensional Array
The syntactical difference is my_array(1)(2)(3) vs. my_array(1,2,3).

The advantage to array of array declaration is that you could get a full array as the result; the latter use requires access to a particular int1. Although this type of access is not always necessary.
Author:  drij [ Wed Oct 22, 2008 4:24 pm ]
Post subject:  Re: Initializing A Multidimensional Array
Thanks guys. The_Bean's solution worked. I suppose initializing a multidimensional array declared the way had mine at the top would require the values to be specified differently. Assuming it's even possible. Smile

P.S.: In case you're wondering; this was for a tick-tac-toe game; storing all eight possible combinations of three squares that all would need to be of the same type for the game to have been won.

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