The purpose is syntax sugar for mixing and matching verb and nouns into a gerund
(+:"_) `(3"_)` (-:"_) this works/equivalent and has less line noise. (dont have to specify rank to noun when it is right argument to conjunction). It can be used with either my version of if, or just @. +: else4 3 else4 -: 3: else4 0 else4 -: @. * i:3 _1.5 _1 _0.5 3 0 0 0 ----- Original Message ----- From: Raul Miller <[email protected]> To: Programming forum <[email protected]> Cc: Sent: Wednesday, February 5, 2014 9:52:43 AM Subject: Re: [Jprogramming] Re {programming] setting rank to a a conjunction Why are you using 'else' without 'if'? As near as I can tell, you are trying to construct a gerund, why use 'else' at all in this case? Thanks, -- Raul On Wed, Feb 5, 2014 at 9:51 AM, Pascal Jasmin <[email protected]> wrote: > 3"_`(+:"_)` (-:"_) > ┌─────────────────┬──────────────┬──────────────┐ > │┌─┬─────────────┐│┌─┬──────────┐│┌─┬──────────┐│ > ││"│┌─────┬─────┐│││"│┌──┬─────┐│││"│┌──┬─────┐││ > ││ ││┌─┬─┐│┌─┬─┐││││ ││+:│┌─┬─┐││││ ││-:│┌─┬─┐│││ > ││ │││0│3│││0│_│││││ ││ ││0│_│││││ ││ ││0│_││││ > ││ ││└─┴─┘│└─┴─┘││││ ││ │└─┴─┘││││ ││ │└─┴─┘│││ > ││ │└─────┴─────┘│││ │└──┴─────┘│││ │└──┴─────┘││ > │└─┴─────────────┘│└─┴──────────┘│└─┴──────────┘│ > └─────────────────┴──────────────┴──────────────┘ > > instead I got result from: > > 3"_`+:"_` (-:"_) > > a workaround is: > > else4 =: 2 : ('u`(v"_)') > > > 3"_ else4 +: else4 (-:) NB. provides same correct output as top. > > > but you have to remember to verbify the leftmost argument. > > > > ----- Original Message ----- > From: Raul Miller <[email protected]> > To: Programming forum <[email protected]> > Cc: > Sent: Wednesday, February 5, 2014 9:21:15 AM > Subject: Re: [Jprogramming] Re {programming] setting rank to a a conjunction > > Can you explain what result you want to achieve here? > > Thanks, > > -- > Raul > > > On Wed, Feb 5, 2014 at 9:09 AM, Pascal Jasmin <[email protected]> wrote: >> And conjunctions are deprived of that opportunity. >> >> An example from the other thread, the conjunction: >> >> else =: 2 : '(u"_)`(v"_)' >> >> >> seems like a useful replacement to tie if you want eye candy for >> "verbifying" any of its arguments, but it doesn't actually work for multiple >> applications: >> >> 3"_`+:`-: >> ┌─────────────────┬──┬──┐ >> │┌─┬─────────────┐│+:│-:│ >> ││"│┌─────┬─────┐││ │ │ >> ││ ││┌─┬─┐│┌─┬─┐│││ │ │ >> ││ │││0│3│││0│_││││ │ │ >> ││ ││└─┴─┘│└─┴─┘│││ │ │ >> ││ │└─────┴─────┘││ │ │ >> │└─┴─────────────┘│ │ │ >> └─────────────────┴──┴──┘ >> >> produces 3 elements, but: >> >> 3"_`+:else -: >> ┌──────────────────────────────────────┬──────────────┐ >> │┌─┬──────────────────────────────────┐│┌─┬──────────┐│ >> ││"│┌──────────────────────────┬─────┐│││"│┌──┬─────┐││ >> ││ ││┌─┬──────────────────────┐│┌─┬─┐││││ ││-:│┌─┬─┐│││ >> ││ │││0│┌─────────────────┬──┐│││0│_│││││ ││ ││0│_││││ >> ││ │││ ││┌─┬─────────────┐│+:│││└─┴─┘││││ ││ │└─┴─┘│││ >> ││ │││ │││"│┌─────┬─────┐││ │││ ││││ │└──┴─────┘││ >> ││ │││ │││ ││┌─┬─┐│┌─┬─┐│││ │││ │││└─┴──────────┘│ >> ││ │││ │││ │││0│3│││0│_││││ │││ │││ │ >> ││ │││ │││ ││└─┴─┘│└─┴─┘│││ │││ │││ │ >> ││ │││ │││ │└─────┴─────┘││ │││ │││ │ >> ││ │││ ││└─┴─────────────┘│ │││ │││ │ >> ││ │││ │└─────────────────┴──┘││ │││ │ >> ││ ││└─┴──────────────────────┘│ │││ │ >> ││ │└──────────────────────────┴─────┘││ │ >> │└─┴──────────────────────────────────┘│ │ >> └──────────────────────────────────────┴──────────────┘ >> >> produces only 2, as it applies rank to its entire u argument. >> >> >> >> ----- Original Message ----- >> From: Raul Miller <[email protected]> >> To: Programming forum <[email protected]> >> Cc: >> Sent: Tuesday, February 4, 2014 9:00:42 PM >> Subject: Re: [Jprogramming] Re {programming] setting rank to a a conjunction >> >> While you cannot "apply" rank to an adverb you can arrange for it to >> be applied to the result of the adverb. >> >> For example >> Red=: /("1) >> +Red i.3 3 >> 3 12 21 >> >> Thanks, >> >> -- >> Raul >> >> >> On Tue, Feb 4, 2014 at 8:08 PM, Don Guinn <[email protected]> wrote: >>> OK. You're right it can be applied to nouns. But then it makes a constant >>> verb. What it cannot be applied to is an adverb or conjunction. Not that >>> there haven't been times that I wish that it could. >>> >>> >>> On Tue, Feb 4, 2014 at 5:26 PM, Dan Bron <[email protected]> wrote: >>> >>>> Hey now, don't rile the pedant. Rank also accepts noun LHA (and, FWIW, >>>> verb RHAs). >>>> >>>> That said, by definition, 13 : n will produce a verb, no matter what n >>>> is. (Well, ok, either a verb or an error.) >>>> >>>> -Dan >>>> >>>> >>>> > On Feb 4, 2014, at 8:17 AM, Don Guinn <[email protected]> wrote: >>>> > >>>> > The rank conjunction only applies to verbs. >>>> > >>>> > >>>> >> On Tue, Feb 4, 2014 at 3:05 AM, linda <[email protected]> wrote: >>>> >> >>>> >> In an earlier post : >>>> >> >>>> >> >>>> >> >>>> >> t2=: 13 : '*/ |: y ' >>>> >> >>>> >> t2 >>>> >> >>>> >> [: + / |: >>>> >> >>>> >> >>>> >> >>>> >> Also: J "does it your way" >>>> >> >>>> >> >>>> >> >>>> >> t3 =: 13 : ']@:+/"1 y ' >>>> >> >>>> >> t3 >>>> >> >>>> >> ]@:+/"1 >>>> >> >>>> >> >>>> >> >>>> >> t3 3 3 $ i.9 >>>> >> >>>> >> 3 12 2` >>>> >> >>>> >> >>>> >> >>>> >> >>>> >> >>>> >> t3 is a verb, instead of a conjunction. >>>> >> >>>> >> >>>> >> >>>> >> Linda >>>> >> >>>> >> >>>> >> >>>> >> ---------------------------------------------------------------------- >>>> >> 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 >>>> >>> ---------------------------------------------------------------------- >>> 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 > ---------------------------------------------------------------------- > 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
