You're probably right. I usually look at tacit expressions with boxed display. Easier to read it that way. But it just takes practice.
It's interesting that there are many classes and books on writing programs but none for reading. 2010/11/21 Björn Helgason <[email protected]> > I completely disagree. > There are very few people who can read and understand tacit expressions. > > 2010/11/16 Don Guinn <[email protected]> > > > 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 <[email protected]> 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 <[email protected]> > > > Date: Tuesday, November 16, 2010 9:30 > > > Subject: Re: [Jprogramming] tacit programming > > > To: 'Programming forum' <[email protected]> > > > > > > > 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: [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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
