Thank you all for your excellent answers. So basically may I conclude that: 1. For present there's no way for lazy evaluation in J; 2. For such task, I'd better reshape my mind into J's way.
Best, Xin -----Original Message----- From: Aai [mailto:agroeneveld...@gmail.com] Sent: Wednesday, October 12, 2011 11:48 AM To: Programming forum Subject: Re: [Jprogramming] lazily look for label? Variable label length string: ]S=.;('label',":"0)&.>?~100 label2label33label46label1label82label91label25 ....... Just a possibility to extract e.g. the first 6 labels: 6{. (<;.1~'label'&E.) S ┌──────┬───────┬───────┬──────┬───────┬───────┐ │label2│label33│label46│label1│label82│label91│ └──────┴───────┴───────┴──────┴───────┴───────┘ Hallo Zheng, Xin (NIH) [C], je schreef op 12-10-11 16:34: > Hello all, > > 'label' I.@E. 'label1label2label3' could give where the label starts in the > string. If the string is very long or infinite, only limited sites, say the > first 100 starting sites, are needed. How to do it? > > Thank you, > > Xin > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- Met vriendelijke groet, =@@i ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
