Very nice. If you've written even a simple macro you will be able to relate to this presentation. You may have a hit.
On Fri, Mar 7, 2014 at 4:15 PM, Roger Hui <rogerhui.can...@gmail.com> wrote: > (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 > -- John D. Baker bakerj...@gmail.com ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
