(1) There is perhaps a generational difference. Young people might like some background music?
(6) 10&#.^:_1 x converts a number to its decimal digits. Alternatively, "."0":x would be shorter than what's on the video. But we quibble. 10&#.^:_1 ]!100x 9 3 3 2 6 2 1 5 4 4 3 9 4 4 1 5 2 6 8 1 6 9 9 2 3 8 8 5 6 2 6 6 7 0 0 4 9 0 ... "."0": !100x 9 3 3 2 6 2 1 5 4 4 3 9 4 4 1 5 2 6 8 1 6 9 9 2 3 8 8 5 6 2 6 6 7 0 0 4 9 0 ... On Fri, Mar 7, 2014 at 1:54 PM, Murray Eisenberg <mur...@math.umass.edu>wrote: > A comment on Roger's comment as well as some comments on other aspects of > the video. > > (1) In fact, I find the sound background not just superfluous, but > distracting. (Yes, I know that's why we have a mute function on our > computers' sound controls.) > > (2) The background globe graphic is a bit distracting, too. Clearly _some_ > kind of background was needed for the horizontal scrolling banners; perhaps > just a plain background or a simple color gradient would be better. (I find > such irrelevant backgrounds akin to the sort of "chart junk" that Tufte > inveighs against.) > > (3) There's steep jump in code length from the couple of examples done in > immediate-execution mode to the scripts for the GUI examples. In fact, > looking at the quick scroll through the GUI code scripts, those not already > familiar with J might wonder why bother to learn a new language if the code > is still so long (unless they've coded enough to realize that in language > they already use, the code would probably be orders of magnitude larger). > > (4) The two GUI examples are quite nice! > > (5) Perhaps in place of one of the Euler contest problems, something > manipulating text would make the whole thing more meaningful to a larger > body of potential users. > > (6) Re Euler Problem 20: At first I found it surprising that the solution > involved converting !100x into a string, forming the list of characters in > that string, and then converting the characters to their digit equivalents. > That is, I was a bit surprised that the primitives didn't already provide a > facility for extracting the integer digits of an integer (or > generalizations to other bases). Have I forgotten something? > > (7) It would be useful if the video provide download links for the files > used in the GUIs (and, for that matter, script records of the > immediate-execution examples). > > > > On Fri, 7 Mar 2014 10:17:19 -0800, Roger Hui <rogerhui.can...@gmail.com> > wrote: > > > V. nice. > > > > I note that the video basically does not make use of sound in the sense > the > > if you mute it, the information content is the same. The video > > https://www.youtube.com/watch?v=DmT80OseAGs (Sudoku in APL, by John > > Scholes) has a different approach wrt sound. From what I understand the > > narration is difficult to do well and required lots of practice. > > > > > > > > On Fri, Mar 7, 2014 at 5:11 AM, Martin Saurer <martin.sau...@bluewin.ch > >wrote: > > > >> ...My two cents (or 15 minutes) to show what J can do. > >> > >> Feedback is welcome. > >> > >> <https://www.youtube.com/watch?v=VSJpJt3c11c> > >> https://www.youtube.com/watch?v=VSJpJt3c11c > > —— > Murray Eisenberg mur...@math.umass.edu > Mathematics & Statistics Dept. > Lederle Graduate Research Tower phone 240 246-7240 (H) > University of Massachusetts > 710 North Pleasant Street > Amherst, MA 01003-9305 > > > > > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
