Talk:E-book comb.as

Those diffs are pretty revealing ay? ;-)

• TR → TL (uses Tx to flip right to left)
• TR → BR (uses Ty to flip top to bottom)

Notice that the differences can all be expressed as simple changes of sign of an item in some of the expressions. Tx is -1 or +1, Ty is -1, 0 or +1. Tx and Ty use those values so that they can be used as multipliers to either change the sign of what they multiplied with (if its -1) or leave it unchanged if its +1.

Yep thats helpful, ta. I've passed the variables into the function now so I'm happy Jack 23:40, 20 Dec 2006 (NZST)

I'll wait until you've cleaned it up and reduced to single function using tx,ty before looking at that lot I think --Nad 09:05, 21 Dec 2006 (NZST)

Some problem with iterating with Ming I think, works fine otherwise. Jack 00:14, 22 Dec 2006 (NZST)

It's going well, but here's a list of issues to sort out...

• you haven't reduced down from the diffs as explained above, you've still got duplicated code which is pointless since the only difference between all 6 contingencies is sign-changes. Just read the notes aboce carefully, don't just skim over them.
• you've got big problems with your logic which will be why its not iterating properly. Don't do any trial-and-error, make notes don't try and do it in your head. Think about what the roles of .across, .down, j and k actually are. --Nad 00:26, 22 Dec 2006 (NZST)