"0"0_ should of course have been "0"_
On Mon, Sep 10, 2012 at 11:15 PM, Ian Clark <earthspo...@gmail.com> wrote: > Have you tried it with "0"0_ and "0 in place of "_1 ? > > t=: ;: 'alpha bravo charlie delta echo' NB. a bit longer, for a > better test > > ' ' (13 :' }.;;"_1 y') t > alpha bravo charlie delta echo > ' ' (13 :' }.;;"0"_ y') t NB. "_1 <==> "0"_ here > alpha bravo charlie delta echo > ' ' (13 :' }.;;"0 y') t NB. Does it need "_ ? --no. > alpha bravo charlie delta echo > > From the J Dictionary: http://www.jsoftware.com/help/dictionary/d600n.htm > > A negative rank is complementary: m"(-r) y is equivalent to > m"(0>.(#$y)-r)"_ y . > > ...For 1=(#$y), this means: "_1 <==> "0"_ > > BTW: that last example: (13 :' }.;;"0 y') > ...becomes km's offering: [: }. [: ; ;"0 > > > On Mon, Sep 10, 2012 at 10:29 PM, Linda Alvord <lindaalv...@verizon.net> > wrote: >> Here's a little comic relief! >> >> ;"_1 t >> alph >> bravo >> chuck >> f=: 13 :';"_1 y' >> f >> ;"_1 >> f t >> alph >> bravo >> chuck >> >> >> -----Original Message----- >> From: programming-boun...@forums.jsoftware.com >> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Linda Alvord >> Sent: Monday, September 10, 2012 4:56 PM >> To: programm...@jsoftware.com >> Subject: Re: [Jprogramming] Flattening a list containing boxed elements >> >> This in pretty, too. J figures out all the little extras for you! >> >> h=: 13 :' }.;;"_1 y' >> LF h t >> alph >> bravo >> chuck >> h >> [: }. [: ; ;"_1 >> >> >> >> -----Original Message----- >> From: programming-boun...@forums.jsoftware.com >> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Peter B. >> Kessler >> Sent: Monday, September 10, 2012 3:21 PM >> To: programm...@jsoftware.com >> Subject: Re: [Jprogramming] Flattening a list containing boxed elements >> >> I'm still at the stage where I have to read the dictionary entry for most of >> the verbs, so I'm not even in the slow lane yet. Looking at Stitch (dyadic >> ,.)[1] I was reminded of the explanation of u"_1, which suggested using Link >> (dyadic ;)[2] >> >> g =: }. @ (; @ (;"_1)) >> ' ' g t >> alpha bravo chuck >> LF g t >> alpha >> bravo >> chuck >> >> if you like "pipelining" your verbs. (The outer set of parens aren't needed >> in g , but that's a subtly different pipeline.) >> >> ... peter >> >> [1] http://www.jsoftware.com/docs/help701/dictionary/d321.htm >> [2] http://www.jsoftware.com/docs/help701/dictionary/d330.htm >> >> Linda Alvord wrote: >>> In the slow lane, here's a version without @ or &. or even inv . >>> >>> t=: 'alpha' ; 'bravo' ; 'chuck' >>> >>> }.@((<' ') ;@,. ]) t >>> alpha bravo chuck >>> }: ; t,&.> ' ' >>> alpha bravo chuck >>> }.(<' ')([:;,.) t >>> alpha bravo chuck >>> >>> >>> Linda >>> >>> >>> -----Original Message----- >>> From: programming-boun...@forums.jsoftware.com >>> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Linda >>> Alvord >>> Sent: Friday, September 07, 2012 4:07 PM >>> To: programm...@jsoftware.com >>> Subject: Re: [Jprogramming] Flattening a list containing boxed >>> elements >>> >>> Thanks, After I sent the message it rankled me that it might be a problem >>> of rank. >>> >>> Linda >>> >>> -----Original Message----- >>> From: programming-boun...@forums.jsoftware.com >>> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Dan >>> Bron >>> Sent: Friday, September 07, 2012 12:35 PM >>> To: programm...@jsoftware.com >>> Cc: <programm...@jsoftware.com> >>> Subject: Re: [Jprogramming] Flattening a list containing boxed >>> elements >>> >>> Rank. All definitions in the DoJ are subject to considerations of rank, >>> though this often -forgive the pun- tacit. >>> >>> NB. vi (v x) u (v y) >>> glue =: dyad def '< (> x) , (> y)' >>> >>> >>> NB. Rank zero here is key >>> ; z glue"0 ' ' >>> alpha bravo chuck >>> >>> -Dan >>> >>> Please excuse typos; composed on a handheld device. >>> >>> On Sep 7, 2012, at 11:22 AM, "Linda Alvord" <lindaalv...@verizon.net> wrote: >>> >>>> Now what am I missing? >>>> >>>> ; z ,&.> ' ' >>>> alpha bravo chuck >>>> >>>> NB. x u&.v y ↔ vi (v x) u (v y) >>>> >>>> ;<(>z),>' ' >>>> alpha >>>> bravo >>>> chuck >>>> >>>> Linda >>>> >>>> -----Original Message----- >>>> From: programming-boun...@forums.jsoftware.com [mailto:programming- >>>> boun...@forums.jsoftware.com] On Behalf Of Linda Alvord >>>> Sent: Friday, September 07, 2012 11:00 AM >>>> To: programm...@jsoftware.com >>>> Subject: Re: [Jprogramming] Flattening a list containing boxed >>>> elements >>>> >>>> Chuck caused grief! >>>> >>>> -----Original Message----- >>>> From: programming-boun...@forums.jsoftware.com >>>> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Dan >>>> Bron >>>> Sent: Friday, September 07, 2012 9:24 AM >>>> To: programm...@jsoftware.com >>>> Cc: <programm...@jsoftware.com> >>>> Subject: Re: [Jprogramming] Flattening a list containing boxed >>>> elements >>>> >>>> There are more issues than that. For example, try it with "chuck" >>>> instead of "charlie". >>>> >>>> Also, since > is a scalar verb, the "0 is superfluous. Also, the ,' ' >>>> appends spaces not to the individual words, but to the entire array, >>>> so that they all end up trailing, instead of interspersed as desired >>>> (the spaces which separate the words in Linda's final result are an >>>> [undependable] side-effect of >, and the experiment suggested above >>>> may hint at their origin). >>>> >>>> But, like newcomer to a foreign tongue, Linda has certainly made >>>> herself understood, and the idea is spot on, even if the words aren't >>>> exact. >>>> Certainly we do want to: >>>> >>>>> get inside >>>> "0 each box >>>> ,' ' append a space >>>> , and string the whole thing together. >>>> >>>> A native speaker might have said ; z ,&.> ' ' (and a fastidious >>>> speaker would prepend a }: ). >>>> >>>> -Dan >>>> >>>> Please excuse typos; composed on a handheld device. >>>> >>>> On Sep 7, 2012, at 8:02 AM, "R.E. Boss" <r.e.b...@planet.nl> wrote: >>>> >>>>> z=: 'alpha' ; 'bravo' ; 'charlie' >>>>> >>>>> ' '=,(>"0 z),' ' >>>>> 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 >>>>> >>>>> ' '=;:^:_1 z >>>>> 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 >>>>> >>>>> >>>>> R.E. Boss >>>>> >>>>> >>>>>> -----Oorspronkelijk bericht----- >>>>>> Van: programming-boun...@forums.jsoftware.com >>>> [mailto:programming-boun...@forums.jsoftware.com] Namens Linda Alvord >>>>>> Verzonden: vrijdag 7 september 2012 12:50 >>>>>> Aan: 'Programming forum' >>>>>> Onderwerp: Re: [Jprogramming] Flattening a list containing boxed >>>>>> elements >>>>>> >>>>>> Did I miss this somewhere? An alternative without inv. >>>>>> >>>>>> ,(>"0 z),' ' >>>>>> alpha bravo charlie >>>>>> >>>>>> 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
