John Randall wrote: > The verb testjmf does the appends in a jmf file. The timings increase > approximately linearly, giving overall quadratic performance.
I tested and got similar results. furthermore if modified to use amend f=:(y*1e4)$0 for_i. i.y do. smoutput i, 6!:2 'f=:(i.1e4) ((i*1e4)+i.1e4)}f' end. the timing became constant thus I guess J engine itself is responsible for the degraded performance in append, but of course I may be wrong. -- regards, bill ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
