Interesting. I find this surprising.
That said, it is documented, in the first paragraph at https://www.jsoftware.com/help/dictionary/xmain.htm Thanks, -- Raul On Thu, Apr 7, 2022 at 9:51 AM Henry Rich <henryhr...@gmail.com> wrote: > > Now I understand 13!:19, and it is fine as coded. > > Raul's problem was that 13!:19 y requires that y be convertible to a > string, so > > 13!:19 ] 1 > > was failing. > > Henry Rich > > On 4/6/2022 7:54 PM, Elijah Stone wrote: > > (To be clear, I do not think continuations are a _bad_ idea; but they > > do represent a unique set of challenges complications, as demonstrated > > e.g. by dynamic-wind.) > > > > On Wed, 6 Apr 2022, Elijah Stone wrote: > > > >>> Suppose you want to look around in the caller's frame. You try > > >>> 13!:19'', but it restarts immediately, calls problem again, and fails. > >>> > >>> That seems like a valid use case. More generally, it seems like it > >>> would be useful to poke around in _any_ stack frame, without > >>> destroying the ones beneath (or on top of, depending on which way > >>> your stacks grow) it. But that leads to forking stacks and > >>> continuations. > >>> ---------------------------------------------------------------------- > >>> For information about J forums see http://www.jsoftware.com/forums.htm > >>> > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
