Yes - it's easy to see how you might make this mistake. The foreign conjunction immediately preceding (1!:12) is (1!:11) - indexed read - which does require 2 numbers in the second box. Also, if you're coming from something lik a C background, you are used to specifying the lengths of things explicitly, as in the prototype for file write:
fwrite(void *ptr, size_t size, size_t nbr, FILE *stream); Hermann - it looks like you may be working with large files, so you may be interested in this description of dealing with files larger than 2 GB: http://www.jsoftware.com/jwiki/Scripts/Working%20with%20Big%20Files . Unfortunately, it's specific to Windows as it uses an API for working with large files. On Wed, Dec 16, 2009 at 9:35 AM, bill lam <bbill....@gmail.com> wrote: > I guess the length error referred to the right argument of 1!:12 that > it expected a count of 2 item. > a 1!:12 f,(sg*60) > or > a 1!:12 f;(sg*60) > > mer, 16 Dec 2009, Hermann Wandelt skribis: > > Yes Bill, 'a' is a character string of 60 bytes. > > > > a=. 10 15 15 10 10":tpr=.sg,(sg*#Tin),(#Tin),(sg*#Tdi),#Tdi > > > > a > > ' 0 0 9679 0 49' > > > > > > ______________________ > > > > Hermann Wandelt > > > > Schustersweid 6 > > > > 47665 Sonsbeck > > > > E-Mail: bay...@online.de > > > > -----Ursprüngliche Nachricht----- > > Von: programming-boun...@jsoftware.com > > [mailto:programming-boun...@jsoftware.com] Im Auftrag von bill lam > > Gesendet: Mittwoch, 16. Dezember 2009 15:03 > > An: programming@jsoftware.com > > Betreff: Re: [Jprogramming] Indexed Write(length) Error > > > > What is 'a'? Is it a rank-1 character array of 60 bytes? > > > > mer, 16 Dec 2009, Hermann Wandelt skribis: > > > I'm not very experienced in using Foreign Conjunctions. Therefore I > can't > > > see what the length error causes. > > > > > > > > > > > > NB.---------------Test No. 1 > > > > > > ---------------------------------------------------------------------------- > > > -------------------------------------------------- > > > > > > sg > > > > > > 0 > > > > > > (10 15 15 10 10":tpr=.sg,(sg*#Tin),(#Tin),(sg*#Tdi),#Tdi) > > > (1!:12)('d:\xldlm\dlm_daten\dlmnIndex.txt';(sg*60),60) > > > > > > |length error > > > > > > | (10 15 15 10 10":tpr=.sg,(sg*#Tin),(#Tin),(sg*#Tdi),#Tdi) (1!:12) > > > ('d:\xldlm\dlm_daten\dlmnIndex.txt';(sg*60),60) > > > > > > > > > NB. -------------Test No. 2 > > > > > > ---------------------------------------------------------------------------- > > [---=| Quote block shrinked by t-prot: 23 lines snipped |=---] > > > > > > a (1!:12) f,(sg*60),60 > > > > > > |length error > > > > > > | a (1!:12)f,(sg*60),60 > > > > > > > > > NB. > > > > > > ---------------------------------------------------------------------------- > > [---=| TOFU protection by t-prot: 20 lines snipped |=---] > > -- > regards, > ==================================================== > GPG key 1024D/4434BAB3 2008-08-24 > gpg --keyserver subkeys.pgp.net --recv-keys 4434BAB3 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA ^me^ at acm. org is my preferred e-mail ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
