On Fri, Jul 15, 2011 at 2:48 PM, Dan Bron <[email protected]> wrote: > Verbal amend is under-documented and rarely used, due to the property you've > discovered. > > In fact, verbal amend is only ever used when that property is desired. > Otherwise, one would use the noun or gerundial form. > > The property is that in x f} y the verb f addresses indices into the > __ravel__ of y. So, for example, x 4:} y inserts x at 4 { (,y) . > > This has been a known bug for a long time: > > http://www.jsoftware.com/jwiki/System/Interpreter/Bugs#specificationofverbal > amendincomplete
Thanks, it is good to know I was understanding correctly then. I see how the gerundial form is an adequate workaround, using [ and ] : a =: 'abcd',:'efgh' '*' [`((<1 2)"_)`]} a abcd ef*h -- src/ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
