Programming challenges: processing vectors and matrices

[DavidM]

(02-17-2019 10:18 PM)ttw Wrote:  It would be nice to get a single row or column of a matrix; currently I just convert the matrix to rows (or columns) and make a list of these. This can take lots of stacksmanship.

ROW- and COL- provide you with both the modified source array as well as the specified row or column that was removed. So something like OVER SWAP COL- NIP could be used to return a specified column of an array without having to do a lot of conversions.