If the exercise is to find the index, remember the existing dyad verb i. 9 4 6 i. 4 1
If the exercise is a tacit solution... idxof =: = # ([EMAIL PROTECTED]@[) 9 4 6 idxof 4 1 NB: Does not handle a 'list' right argument (as indexOf also fails here) 9 4 6 indexOf 4 9 |length error: indexOf | tally_map=:x =y .../Rob On 9/10/07 10:08 PM, "metaperl.j" <[EMAIL PROTECTED]> wrote: > > > > metaperl.j wrote: >> >> tally_map =: value = y >> > > Typo city. Here's the solution: > > indexOf =: 4 : 0 > indices =: i. # x > tally_map =: x = y > tally_map # indices > ) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
