Yes; certainly avoid explaining tacit code to a beginner until you have gone over rank, etc. However, I think that tacit is not inherently difficult to understand for a programmer who knows a fair bit of J.
Marshall -----Original Message----- From: programming-boun...@jsoftware.com [mailto:programming-boun...@jsoftware.com] On Behalf Of Björn Helgason Sent: Sunday, November 21, 2010 1:16 PM To: Programming forum Subject: Re: [Jprogramming] tacit programming Tacit are great and we can surely all agree on that. What is problem is understanding them and they need a lot of understanding and effort. I try not to show tacit to people without a lot of explanation. 2010/11/21 Marshall Lochbaum <mlochb...@raleighcharterhs.org> > I strongly disagree. I write only tacit expressions when they are not > of ridiculous length, and I would rather have a few lines of tacit > than a lot of explicit lines. > Tacit also avoids having to write variable names over and over again > in the same line, which otherwise would be cumbersome. > > Marshall > > -----Original Message----- > From: programming-boun...@jsoftware.com [mailto: > programming-boun...@jsoftware.com] On Behalf Of Tom Arneson > Sent: Sunday, November 21, 2010 11:17 AM > To: 'Programming forum' > Subject: Re: [Jprogramming] tacit programming > > I agree with Bjorn. I only use very simple tacit programs, and usually > create them with 13 : > > I cannot read the complex ones without a lot of effort. > > > > -----Original Message----- > From: programming-boun...@jsoftware.com [mailto: > programming-boun...@jsoftware.com] On Behalf Of Björn Helgason > Sent: Sunday, November 21, 2010 08:29 > To: Programming forum > Subject: Re: [Jprogramming] tacit programming > > I completely disagree. > There are very few people who can read and understand tacit expressions. > > 2010/11/16 Don Guinn <dongu...@gmail.com> > > > I thought the original issue was on how readable tacit expressions > > are, not the correctness or most efficient the expression. Based on > > the comments in this thread it seems that people can read the > > original tacit expression quite well. > > > > On Tue, Nov 16, 2010 at 11:53 AM, Roger Hui <rhui...@shaw.ca> wrote: > > > > > > My input is numbers and my output is numbers and fundamentally > > > > I'm doing arithmetic - so why should I have to translate to > > > > strings & back? (I know the answer, I'm just giving you my thought > > > > process. > > > > ... > > > > > > I am curious regarding what "the answer" is. > > > > > > There is an analogy from mathematics. Number theory (the study of > > > integers) advanced by leaps and bounds with the application of the > > > the machinery of calculus and complex analysis. Why should > > > complex numbers have anything to do with integers? > > > > > > > > > > > > ----- Original Message ----- > > > From: Dan Bron <j...@bron.us> > > > Date: Tuesday, November 16, 2010 9:30 > > > Subject: Re: [Jprogramming] tacit programming > > > To: 'Programming forum' <programming@jsoftware.com> > > > > > > > Raul wrote: > > > > > {.&.":&> seems more natural than anything involving #: > > > > or #.inv > > > > > > > > I'll buy that as a practical matter. But as a notational > > > > matter, it just doesn't "feel" right to me. My input is numbers > > > > and my output is numbers and fundamentally I'm doing arithmetic > > > > - so why should I have to translateto strings & back? (I know > > > > the answer, I'm just giving you my thought process. This > > > > similar to the reason I was nettled by > > > > "."0@": being > > > > optimized rather than 10&#.^:_1 [1] .) > > > > > > > > > An issue here is that #: and #.inv are designed to pad > > > > with leading > > > > > > > > Yep, that's what stymied the first correction I sent to Bjorn: I > > > > had [: > > > > ({."1) 10 #.^:_1 p:@:i. but I had to change it to > > > > {.@(10&#.^:_1)@p:@:i.for exactly this reason (naturally, I > > > > realized this 14 microseconds after hitting "send" - OTOH I am > > > > always pleased to find a natural use for @ as opposed to @: and > > > > since {."1 required parens anyway, the new formulationwasn't any > > > > messier). > > > > > > > > But #: padding on the left is helpful much more often than it > > > > is a nuisance (we're array programmers, after all), so I > > > > shouldn't complain. > > > > -Dan > > > > > > > > [1] http://www.jsoftware.com/help/release/digits10.htm > > > ------------------------------------------------------------------ > > > -- > > > -- For information about J forums see > > > http://www.jsoftware.com/forums.htm > > > > > -------------------------------------------------------------------- > > -- For information about J forums see > > http://www.jsoftware.com/forums.htm > > > > > > -- > Björn Helgason, Verkfræðingur > Fornustekkum II > 781 Hornafirði, > t-póst: gos...@gmail.com > 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 > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Björn Helgason, Verkfræðingur Fornustekkum II 781 Hornafirði, t-póst: gos...@gmail.com 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
