One of the strengths of J is you can write formulas that are correct concise and very very short.
That is also sometimes seen as frightening and most people do not understand how it works. We need a lot more explained examples in order to get more and better acceptance. I think we can also do more of using forms to link between explanations and code. It is very easy to write a form and have buttons do some J operations and have good explanation on the display. 2009/12/9 Dan Bron <[email protected]>: > James C Field wrote: >> Your parlour trick exposes an inadequacy in J. String theory (really a >> model) is untestable. > > The fact that I can use J to easily express a mathematical concept, and > communicate it via email, and know with complete confidence > that my audience will see what I wrote as I wrote it (all without using any > extraneous or special tools), is a strong advantage of > J, and a weakness of SMN and APL. > > Also, The J phrase +/ 2 ^ - i. _ is no less "testable" than: > > OO > ----- > \ -i > \ 2 > / > / > ----- > i=0 > > ... it's just more succinct, consistent, and easier to type (and easier to > extend, even dramatically extend) . They are simply > different notational expressions of the same mathematical concept; neither > calculable, but amenable to "solution" by symbolic > manipulation and insight. So if the J is inadequate, so is the SMN. > > If you don't believe that, then you must explain the thread to which you > responded, wherein the mathematical concept is discussed > and dissected, and furthermore where Roger explains how he could easily > extend the J interpreter to make the J formulation > calculable! That is, the J expression already already has all the value of > the SMN expression (because the two isomorphic), and one > day it might have the overwhelming advantage of being *executable*. > >> I would love to see EVIDENCE of the obvious practical or commercial or >> demonstrated benefits of J. > > Well, I made my living (and several others') for a number of years, > exclusively with J. And I'm not alone. Have you seen > http://www.jsoftware.com/jwiki/Stories ? > > -Dan > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Björn Helgason, Verkfræðingur Fornustekkum II 781 Hornafirði Po Box 127,801 Selfoss , t-póst: [email protected] gsm: +3546985532 sími: +3544781286 http://groups.google.com/group/J-Programming Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans góður kennari getur stigið á tær án þess að glansinn fari af skónum /|_ .-----------------------------------. ,' .\ / | Með léttri lund verður | ,--' _,' | Dagurinn í dag | / / | Enn betri en gærdagurinn | ( -. | `-----------------------------------' | ) | (\_ _/) (`-. '--.) (='.'=) ♖♘♗♕♔♙ `. )----' (")_(") ☃☠ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
