... or even <> a la APL!? Mike Sent from my iPad
> On 27 Jul 2021, at 02:18, Henry Rich <[email protected]> wrote: > > I don't see much downside to implementing a sentence delimiter, except for a > nagging feeling that the good Lord left that space for you to put commentary > in. > > Take a moment to consider what is the best delimiter. I prefer >:: to .. or > ... because it shows the left-to-right order. > > Henry Rich > >> On 7/26/2021 10:44 AM, 'Michael Day' via Programming wrote: >> APL lives/d with the diamond separator, which works from left to right, in >> addition to >> left tack and right tack (in Dyalog anyway) which are similar to J's [ and >> ] . >> >> So this modification might help recruit any APL-ers still averse to or >> unaware of J. >> >> Cheers, >> >> Mike >> >>> On 26/07/2021 14:47, Eric Iverson wrote: >>> Michal, >>> I slightly favor having a statement separator. Others are violently >>> opposed. You have started an interesting discussion that might take a while >>> to pick up steam. Don't give up yet! >>> >>> There are some complicating issues, such as debug. >>> >>> On Mon, Jul 26, 2021 at 4:57 AM Michal Wallace <[email protected]> >>> wrote: >>> >>>> Come on... :) Obviously I know how to write the code I wrote. :D >>>> Yes, I can write the whole thing like this: >>>> >>>> puts@']' fgc@9 puts 4 {. s=.1|.s [ fgc@15 puts@'[' goxy xy [ bgc 4 [ fgc 9 >>>> >>>> I'm just saying it looks backwards and awkward to me. >>>> >>>> This thing draws a string on the screen that looks like [.oOo] in >>>> various colors, and the .oOo part is extracted from a larger string >>>> so it looks like a little indicator that the machine is still doing >>>> something >>>> or waiting for you to do something. (Or rather, this draws one frame of the >>>> animation) >>>> >>>> If I were putting that string together without setting the colors and >>>> moving the cursor, i'd write: >>>> >>>> echo '[', (s=.1|.s), ']' >>>> >>>> But with the color and cursor stuff, I seem to have to break it into >>>> multiple lines, or write it backwards. >>>> >>>> In this particular case, what I plan to do instead is write a little >>>> language that lets me set colors >>>> and move the cursor in the natural order, so it's not a big deal... (Maybe >>>> for J, i'll just make a >>>> "left-to-right" verb that operates on gerunds or something...) >>>> >>>> But... lately, I've also been working on some parser combinators, and a >>>> small virtual machine. >>>> In all these cases, I have bits and pieces of the code which are more >>>> naturally expressed as >>>> sequences of imperative operations, rather than function compositions, and >>>> I find myself >>>> wanting this same statement separator. >>>> >>>> I use K every day at work, and it uses the semicolon for this purpose. I >>>> often find myself wishing K >>>> had forks, and J had statement separators. (and native dictionaries, and a >>>> literal syntax for symbols.. :)) >>>> >>>> Anyway, I noticed '..' was free now and it seems to have a nice symmetry >>>> with '{{' and '}}' >>>> and I thought it might be a good notation for this. >>>> >>>> I don't really expect this proposal to make it into the language (for one >>>> thing, it's not clear to me that >>>> there's an actual process by which language decisions get made), but... I >>>> also didn't expect we'd >>>> ever get anything like {{ and }} (which I've also wanted forever), so I'm >>>> asking. >>>> >>>> >>>> >>>> On Sun, Jul 25, 2021 at 9:45 PM 'robert therriault' via Programming < >>>> [email protected]> wrote: >>>> >>>>> Hi Michal, >>>>> >>>>> In your first line you are already doing what I would do, which is to use >>>>> [ to separate the different results. >>>>> >>>>> goxy xy [ bgc 4 [ fgc 9 >>>>> >>>>> You can continue to do that as long as you get the order right and lower >>>>> things vertically would precede the upper ones >>>>> >>>>> fgc 15 [ puts '[' [ goxy xy [ bgc 4 [ fgc 9 >>>>> >>>>> or perhaps I am misunderstanding what you are trying to do. >>>>> >>>>> Cheers, bob >>>>> >>>>> >>>>> >>>>>> On Jul 25, 2021, at 17:00, Michal Wallace <[email protected]> >>>>> wrote: >>>>>> I love the new '{{' and '}}' ... >>>>>> >>>>>> what are the chances we could bring '..' back as a statement separator, >>>>> at >>>>>> least inside these new double curly braces? >>>>>> >>>>>> Often I have a bunch of really short lines that I would love to just >>>>> stick >>>>>> on one line, like this demo code from the terminal library I'm working >>>>> on: >>>>>> while. -. keyp'' do. >>>>>> goxy xy [ bgc 4 [ fgc 9 >>>>>> puts '[' >>>>>> fgc 15 >>>>>> puts 4{. s=.1|.s >>>>>> fgc 9 >>>>>> puts']' >>>>>> sleep 150 >>>>>> end. >>>>>> >>>>>> I can easily stick these on one line with @ or [: but the code winds up >>>>>> feeling very backward, so I find myself just using newlines and >>>> wasting a >>>>>> lot of vertical space on my screen. >>>>>> >>>>>> One answer here is to make a mini-language for terminal operations >>>> that I >>>>>> can just pass as a string, but there are other places where I find >>>> myself >>>>>> wishing I could just write a sequence of expressions (evaluated >>>>>> right-to-left as usual) but all on one line, and sequence them from >>>> left >>>>> to >>>>>> right... (I use K at work, and this is a pretty natural style) >>>>>> ---------------------------------------------------------------------- >>>>>> 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 >> >> > > > -- > This email has been checked for viruses by AVG. > https://www.avg.com > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
