Makes perfect sense now. The atom vs list distinction wasn't clicking earlier. I had become so used to working with arrays that everything became an array and I had completely forgotten about scalars. The dictionary entry on nouns also covers it well, http://www.jsoftware.com/help/dictionary/dicta.htm.
On Sun, Jan 19, 2014 at 11:18 PM, Henry Rich <henryhr...@nc.rr.com> wrote: > The primitives, namely ;: u;.n u\ u\. u/. produce lists even when there is > only one item in the partition. Very regular. I understand better why it would do that now. As it partitions a list, it is likely simpler and performs better to create a list for each partition instead of determining whether there's only one item in the partition. I think of it as a splitting a char[] array into other char[] arrays instead of char for single and char[] otherwise. > There's just something special about a single character > or a single number: they are atoms. This and the dictionary entry explains why $ 'a' or $ (<'abc') returns blank - since each are atoms. Thanks again ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
