(32&+^:100) 100 x m&v y ↔ m&v^:x y
2008/5/5 Patrick van Beek <[EMAIL PROTECTED]>: > Hi, this is my first post to the list. I would appreciate some help > understanding how J evaluates the following: > > 100 (32&+) 100 > > > > The answer is 3300. Since no multiplication symbol appears I am somewhat > lost how this phrase is being interpreted. I understand (32&+) to be a > monad > so I presume there is a definition in the dictionary which sets out how > such > phrases are used dyadically which I have yet to come across. Any pointers > would be appreciated. > > > > Thanks, > > > > Patrick > > > > PS The background to this question: > > > > I recently discovered J and have worked my way through the primer. One > thing I am having a bit of trouble with is atop @. > > > > My thinking was that if I leave it out and I understand what J does > without > it I can then understand why atop is needed. Using the centigrade > Fahrenheit example: > > 32&+@(1.8&*) > > Compared with: > > 32&+(1.8&*) > > I was scratching my head trying to understand what was happening when the > atop was left out, eventually tracing it to a phrase similar to the one in > the question. > > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Björn Helgason, Verkfræðingur Fugl&Fiskur ehf, Fornustekkum II, 781 Hornafirði Po Box 127,801 Selfoss , t-póst: [EMAIL PROTECTED] gsm: +3546985532 Landslags og skrúðgarðagerð, gröfuþjónusta 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
