If the implementer(s) had done his/her/their job properly, ∧@o., ∧@:o., and [:∧o. should all be supported by special code. For example, http://www.jsoftware.com/help/release/edot504.htm .
Special codes are documented in http://www.jsoftware.com/help/dictionary/special.htm . 2011/12/7 Linda Alvord <lindaalv...@verizon.net> > Here's the stuff I was preparing to send you: > > d=:0 0.5 1 1.5 > f=: 13 :'o.j.y' > f > [: o. j. > ]a=:f d > 0 0j1.5708 0j3.14159 0j4.71239 > ]g=:^a > 1 6.12323e_17j1 _1j1.22465e_16 _1.83697e_16j_1 > > This has to be the correct answer! So, I compared the three versions: > > h=: 13 :'^o.j.y' > h > [: ^ [: o. j. > h d > 1 6.12323e_17j1 _1j1.22465e_16 _1.83697e_16j_1 > 5!:4 <'h' > -- [: > +- ^ > --+ -- [: > L----+- o. > L- j. > > This was as I expected. Since I copied that all from jijx, I got suspicious > when I pasted it into the message. It is a different type face. That > seemed > odd. > > i=: 13 :'^@o.@j.y' > i > ^@o.@j. > i d > 1 0j1 _1 0j_1 > 5!:4 <'i' > > -- ^ > -- @ -+- o. > -- @ -+- j. > > This seemed like the wrong answer. I never did like @ anyway. But, @: > should work. > > j=: 13 :'^@:o.@:j.y' > j > ^@:o.@:j. > j d > 1 6.12323e_17j1 _1j1.22465e_16 _1.83697e_16j_1 > 5!:4 <'j' > -- ^ > -- @: -+- o. > -- @: -+- j. > > Again this is as I expected. I finally realized that: > > 1 0j1 _1 0j_1 -: 1 6.12323e_17j1 _1j1.22465e_16 _1.83697e_16j_1 > 1 > > I was going to post this when I read about your special code. It is hiding > were @ and @: are supposed to be alike. But I must admit that the > third > element of the list: > > 1 0j1 _1 0j_1 > > is more comforting than: > > _1j1.22465e_16 > > How about advertising that @ is always a hiding place for special code. > Actually I don't know where the rest of the special code is hiding. > > Linda > > > > > -----Original Message----- > From: programming-boun...@jsoftware.com > [mailto:programming-boun...@jsoftware.com] On Behalf Of Roger Hui > Sent: Tuesday, December 06, 2011 4:09 AM > To: Programming forum > > ^@o.@j. 0 0.5 1 1.5 > 1 0j1 _1 0j_1 > > ^@o.@j. 0.5 * i.5 4 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > > ^@o.@j. 1e9 + 0.5 * i.5 4 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > 1 0j1 _1 0j_1 > > > > 2011/12/6 Linda Alvord <lindaalv...@verizon.net> > > > Can you make a simple example that looks like this u@v@w ? Please use > > actual verbs so that it is a tight little nugget that might come about in > a > > fairly simple mathematical situation. Use it in a situation that does not > > require rank. Next, write it in explicit form without @ > > > > Here's what I would like. Remember foo ? > > > > foo=: 13 :'an expression with x's and y's and three verbs like # , %: > , > > ? or * ' > > > > > > Also: > > > > Let us use [: u v or u@:v as we like, and specify a rank when we > > need one. > > > > I think I could live with: > > > > Let us use [: u v unless rank is involved. Only use u@:v if rank > is > > needed, thus @ vanishes from the planet. > > > > > > Linda > > > > > > -----Original Message----- > > From: programming-boun...@jsoftware.com > > [mailto:programming-boun...@jsoftware.com] On Behalf Of Henry Rich > > Sent: Monday, December 05, 2011 10:08 PM > > To: Programming forum > > Subject: Re: [Jprogramming] Turkey Roll - Challenge 2 > > > > If you are OK with @: , then we agree. @ is hard for beginners. > > > > > > u@v is equivalent to u@:v"v or ([: u v)"v > > > > u@v@w is u@:v"v@:w"w or ([: ([: u v)"v w)"w > > > > Henry Rich > > > > On 12/5/2011 9:57 PM, Linda Alvord wrote: > > > Can you make a simple example that looks like this u@v@w . Is it > > possible > > > to write an explicit version that will create a tacit expression to do > > the > > > same thing? > > > > > > I don't have a problem with @: . My concern is only with @ > > > > > > Linda > > > > > > -----Original Message----- > > > From: programming-boun...@jsoftware.com > > > [mailto:programming-boun...@jsoftware.com] On Behalf Of Henry Rich > > > Sent: Monday, December 05, 2011 9:28 PM > > > To: Programming forum > > > Subject: Re: [Jprogramming] Turkey Roll - Challenge 2 > > > > > > I don't understand why u@v is anything other than 'right to left'. It > > > means do v, then do u. u@v@w means w, then v, then u. > > > > > > The complication of @ is not its ordering, it's its rank. In my > classes > > > I teach @: as a primitive. We don't use [:, or @ . > > > > > > Henry Rich > > > > > > On 12/5/2011 9:15 PM, Linda Alvord wrote: > > >> > > >> Compare your expression for dice : > > >> > > >> faces=: {&' o'@((i.3 3)e.&":"1])&.>4 80 840 8620 86420 865320 > > >> faces > > >> ------T-----T-----T-----T-----T-----┐ > > >> │ │o │o │o o│o o│o o│ > > >> │ o │ │ o │ │ o │o o│ > > >> │ │ o│ o│o o│o o│o o│ > > >> L-----+-----+-----+-----+-----+------ > > >> > > >> With Kip Murray's version: > > >> > > >> one =: ' ',' o ',:' ' > > >> two =: 'o ',' ',:' o' > > >> three =: 'o ',' o ',:' o' > > >> four =: 'o o',' ',:'o o' > > >> five =: 'o o',' o ',:'o o' > > >> six =: 'o o','o o',:'o o' > > >> ]dice =: one;two;three;four;five;six > > >> ----T---T---T---T---T---┐ > > >> │ │o │o │o o│o o│o o│ > > >> │ o │ │ o │ │ o │o o│ > > >> │ │ o│ o│o o│o o│o o│ > > >> L---+---+---+---+---+---- > > >> > > >> Your dice are great looking! However that change has greatly increased > > the > > >> complexity of the code. Also, there is a condition of the challenge > to > > >> exclude @ in each expression. This requirement encourages > considering > > > the > > >> execution from the right toward the left. In your example 4 80 840 > > 8620 > > >> 86420 865320 could be puzzling to a beginner. Your other ideas are > > >> thoughtful ideas to incorporate in an actual design of a program. At > > this > > >> stage, I'm trying to raise issues that can be discussed and explored > > >> further. > > >> > > >> From your design so far, is it possible for you to capture the > actual > > > values > > >> of the and display them following each toss ? It is this data > that > > > will > > >> be useful as you finish the challenge. > > >> > > >> Linda > > >> > > >> > > >> -----Original Message----- > > >> From: programming-boun...@jsoftware.com > > >> [mailto:programming-boun...@jsoftware.com] On Behalf Of Raul Miller > > >> Sent: Monday, December 05, 2011 9:50 AM > > >> To: Programming forum > > >> Subject: Re: [Jprogramming] Turkey Roll - Challenge 2 > > >> > > >> Personally, I have been baffled by a number of the choices and > > > requirements > > >> here. And, by this, I mean that I do not understand them. > > >> > > >> That said, here is my current interpretation of a mix of some of the > > >> statements expressed here, about what is being accomplished: > > >> > > >> faces=: {&' o'@((i.3 3)e.&":"1])&.>4 80 840 8620 86420 865320 > > >> toss=: (] {~ (?@$ #)) ".bind 'faces' > > >> > > >> Example use, with ascii box drawing enabled: > > >> > > >> toss 2 10 > > >> +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ > > >> |o |o |o o|o |o |o |o |o o|o o|o o| > > >> | o | o | o | o | o | | | | o |o o| > > >> | o| o|o o| o| o| o| o|o o|o o|o o| > > >> +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ > > >> |o |o o|o |o o|o o|o |o |o |o o|o | > > >> | o | o | | o | | | | | | | > > >> | o|o o| o|o o|o o| o| o| o|o o| o| > > >> +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ > > >> toss 2 10 > > >> +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ > > >> |o |o |o o|o |o o|o |o o|o o|o o|o | > > >> | | | | o |o o| o | | o |o o| | > > >> | o| o|o o| o|o o| o|o o|o o|o o| o| > > >> +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ > > >> |o o|o |o o|o o|o o|o o| |o o|o o|o o| > > >> | | | o | | | o | o | | | | > > >> |o o| o|o o|o o|o o|o o| |o o|o o|o o| > > >> +-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+ > > >> > > >> Notes: > > >> > > >> 1. I spaced my pips out wider, horizontally, than the original. I > think > > >> this looks better. > > >> 2. toss has 'faces' as an implicit dependency > > >> 3. I can change the number of dice being tossed by changing the > argument > > > to > > >> toss > > >> > > >> In my opinion, this is not a very good design. In "real life" code, I > > >> would either replace (". bind 'faces') with (faces) or I would make it > > an > > >> argument to the function. > > >> > > >> I could probably compress a few characters out of the definition of > > faces, > > >> but it would become more mysterious if I did so. > > >> > > > ---------------------------------------------------------------------- > > > 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
