Thanks. All is now clear. The J Dictionary says: "$: denotes the longest verb that contains it." http://www.jsoftware.com/help/dictionary/d212.htm
The essential piece of information I was missing (overlooking?) was: "...in the current sentence". On Tue, Sep 4, 2012 at 2:19 PM, Raul Miller <rauldmil...@gmail.com> wrote: > $: refers to the largest containing verb in the current sentence. Explicit > definitions contain sentences. > > -- > Raul > > On Tuesday, September 4, 2012, Ian Clark <earthspo...@gmail.com> wrote: >> Let's define a verb: max which can be used either dyadically: >> >> 5 max 7 >> 7 >> >> or monadically: >> >> max 5 7 >> 7 >> >> Can somebody explain to me please >> (for the purpose of completing >> http://www.jsoftware.com/jwiki/Vocabulary/dollarco ) >> why this works: >> >> max=: $:/ : >. >> >> but this doesn't: >> >> max=: 3 : 0 >> $:/y >> : >> x>.y >> ) >> >> The explicit version (which to me looks equivalent to the tacit one) >> does not work with a noun longer than 1 atom: >> >> max 7 >> 7 >> max 5 7 >> |stack error: max >> | $:/y >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
