On Thu, 22 Jul 2010 17:21:15 -0400, dcoder <[email protected]> wrote:
== Quote from Steven Schveighoffer ([email protected])'s article
This is what I think you should use:
string[int[2]]
Although, I'm not sure if you can then do something like:
chessboard[[0,1]] = "Rook";
as the [0, 1] is typed as a dynamic array. If it does work, it may
actually create [0,1] on the heap and then pass it as an int[2], which
would suck.
board[[0,0]] = "Rook";
seems to work. thanks. But, the foreach loop looks strange. It looks
like it
takes the hash value of the key:
string[int[2]] board;
board[[0,0]] = "Rook";
board[[0,1]] = "Knight";
foreach( pos, val; board) {
writefln( "%s: %s", pos, val);
}
Output:
2 9903680: Knight
2 9903696: Rook
It may be represented properly inside the AA. There are currently some
bugs with AA's and using foreach.
Or, if you know how big your chessboard is (8x8 isn't a lot of memory),
then:
string[8][8] chessboard;
is pretty straightforward :)
Yes it is :) Hehe....
Now, what if I wanted to do the following:
class Board {
string[][] positions;
this( int x, y) {
// set the size of positions
}
}
I want positions to internally represent a chess board, a tic tac toe
board, or a
Connect Four board, etc...
But, I want to fix the dimensions of the board when the board gets
instantiated,
so that I can have the compiler do all the work of bounds checking for
me. I can
create class variables maxx, maxy and access functions that check
against the
variables, but I'm wondering if there's a way to make the compiler do it
for you.
Is there a way?
If you want it to be "compile-time-decided" but not hard-coded to 8x8:
class Board(int width, int height)
{
string[width][height] positions;
}
Then you do:
auto brd = new Board!(8, 8);
-Steve
