Re: struggling with two simple list of lists operations

2012-06-24 Thread Tyler Perkins
Or even shorter, but maybe not as fast because it flattens the given list, then pairs it up again. Thus it also assumes the resulting list should consist ENTIRELY of pairs and singletons, not just the last or penultimate element: (fn [l x] (partition-all 2 (concat (flatten l) [x]))) On Jun 24, 2

Re: struggling with two simple list of lists operations

2012-06-24 Thread Tyler Perkins
I discovered partition-all and came up with this function: (fn [l x] (concat (butlast l) (partition-all 2 (concat (last l) [x] user> ((fn [l x] (concat (butlast l) (partition-all 2 (concat (last l) [x] '() 10) ((10)) user> ((fn [l x] (concat (butlast l) (partition-all 2 (con

Re: struggling with two simple list of lists operations

2012-06-24 Thread Andy Coolware
I know, but this is list :-) -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from th

Re: struggling with two simple list of lists operations

2012-06-24 Thread Alex Baranosky
Yeah, this becomes much more straightforward using vectors. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your fir

Re: struggling with two simple list of lists operations

2012-06-24 Thread Vinzent
I guess you should use vectors, since you can't effectively add an element to the end of list. понедельник, 25 июня 2012 г., 0:46:24 UTC+6 пользователь Andy C написал: > > Hi, > > I am looking for two seemingly simple operations which require adding > to the list: > > (( 1 2 ) ( 20 30) (40))

struggling with two simple list of lists operations

2012-06-24 Thread Andy Coolware
Hi, I am looking for two seemingly simple operations which require adding to the list: (( 1 2 ) ( 20 30) (40)) 50 => (( 1 2 ) ( 20 30) (40 50)) and (( 1 2 ) ( 20 30) (40 50)) 60 => (( 1 2 ) ( 20 30) (40 50) (60)) Basically it is appending an element as a list to the list