This came up on irc the other day and here's my contrived problem and solution: https://gist.github.com/joebo/a3b08b6e8422473803bc
The request was to be take a table of games and return a table of team scores for all the games. The team scores were dependent upon the current team score at the time of the team playing the game. The solution created an initial team score matrix and passed that along for each iteration which was amended On Mon, Jun 22, 2015 at 9:53 PM, Marshall Bockrath-Vandegrift <[email protected]> wrote: > Hi all, > > I'm still in the process of learning J, and trying to adapt ideas from > other languages. In many (other?) functional programming languages it is > possible to reduce over a collection starting with a provided initial value > which does not belong to the reduced collection. To attempt to put this in > J terms, such an operation would allow the initial value and result of each > reduction step to have a different shape than that of the the items of the > value being reduced. As far as I can tell, the standard `/` adverb provides > no such facility. Is there a J idiom for this? > > Thanks, > > -Marshall > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
