Hi Roger, Reporting on a problem when adverb f. fixes a bonded tact ambivalent verb.
(9!:12 ; 9!:14) i. 0 ┌─┬─────────────────────┐ │6│j602/2008-03-03/16:45│ └─┴─────────────────────┘ (9!:3) 5 require 'strings' 2 cut 12 $ i. 5 ┌───┬───────┬───────┐ │0 1│3 4 0 1│3 4 0 1│ └───┴───────┴───────┘ 2 cut f. 12 $ i. 5 ┌───┬───────┬───────┐ │0 1│3 4 0 1│3 4 0 1│ └───┴───────┴───────┘ 2&cut f. 12 $ i. 5 |domain error | 2&cut f.12$i.5 cut f. ' '&$: :([: -.&a: <;._2@,~) 2&cut f. 2&(3 : ''' ''&$: :([: -.&a: <;._2@,~) y') cut&(12 $ i. 5) 2 ┌───┬───────┬───────┐ │0 1│3 4 0 1│3 4 0 1│ └───┴───────┴───────┘ cut&(12 $ i. 5) f. 3 : ''' ''&$: :([: -.&a: <;._2@,~) y' :(4 : 'x '' ''&$: :([: -.&a: <;._2@,~) y')&0 1 2 3 4 0 1 2 3 4 0 1 ======= A left argument is bonded to verb cut. Adverb f. produces only a monadic case whereas when a right argument is bonded to cut both a monadic and dyadic case is produced. If an argument is bonded to a verb producing another verb, the only possibilities would appear to me to be a bonded dyadic verb producing a monadic verb. From the above bonding on the right it appears that J is trying to cover all bases which (in bonding) cannot occur. I appreciate all the depths that f. need to go into to ensure correct results in all cases. Should not the right bonding be simplified to (4 : 'x '' ''&$: :([: -.&a: <;._2@,~) y')&0 1 2 3 4 0 1 2 3 4 0 1 and the left bonding be 2 & (4 : 'x '' ''&$: :([: -.&a: <;._2@,~) y') or, knowing that monads are ruled out, just go inside the verb definition and extract the dyad part as in ([: -.&a: <;._2@,~)&0 1 2 3 4 0 1 2 3 4 0 1 and 2&([: -.&a: <;._2@,~) This also happens in J7. (J7 is rather nice, I have ideas for applications using the web interface - thanks) Ian Ian Shannon Landscape Modelling and Decision Support Section Department of Environment, Climate Change & Water (NSW) PO Box A290 Sydney South NSW 1232 Phone: (02) 99 955 490 Mob: 0424 724 352 email: [email protected]<mailto:[email protected]> web: http://www.environment.nsw.gov.au<http://www.environment.nsw.gov.au/> Please consider the environment before printing my email ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- This email is intended for the addressee(s) named and may contain confidential and/or privileged information. If you are not the intended recipient, please notify the sender and then delete it immediately. Any views expressed in this email are those of the individual sender except where the sender expressly and with authority states them to be the views of the Department of Environment, Climate Change & Water NSW. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
