Also HP calculators for RPN notation.

I was viewing your video on Y-Mas trees and that isn't working on mine. I F6 the first line and CoSy locks up, I get a spinning circle that never recovers.

 https://www.facebook.com/groups/PROGRAMMINGFORTH/permalink/2265087163791305/

| Y-mas Tree
 "bl ` / 16 _iota ' take 'R  1 _cut { cL -16 _fill } 'R
 R0  ` \ 16 _iota ' take 'R 1 _cut { "bl cL 16 _fill } 'm  ' cL 'd >t0>
|  R0 R0 reverse ' cL 'd .. ' cL 'd
 t0 ` o#o s"  # " ,L   i( 14 4 14 )i { & at } 'L  cL  >t0>
(
                /\              
               //\\             
              ///\\\            
             ////\\\\           
            /////\\\\\          
           //////\\\\\\         
          ///////\\\\\\\        
         ////////\\\\\\\\       
        /////////\\\\\\\\\      
       //////////\\\\\\\\\\     
      ///////////\\\\\\\\\\\    
     ////////////\\\\\\\\\\\\   
    /////////////\\\\\\\\\\\\\  
   //////////////\\\\\\\\\\\\\\ 
  ///////////////\\\\\\\\\\\\\\\
 oooooooooooooo####oooooooooooooo
               ####             
 )
| t0 flip  { ,/ reverse } 'm     | X-mas tree

Also did 2 other things, changed my browser via ` BROWSER ->

And saw how you did a vector calc 

f( 2579 3869 )f ' %f ./ | 0.6665805

| as opposed to doing non-vector wise

 

2579. 3869. f/ _f   | 0.6665805 same result

(my sigdig is set to 7)

 2579. _f 3869. _f %f

 2579. 3869. 2_f %f 

Never heard the term before . But quick DDG shows most of the programming world nose .

I like camelToes , oops , camelCase  . Use it lots . I see of the

 ` ALPHabet Dv@ >t0>
 ec Words >t1> #     |>| 933

words in the CoSy vocabulary 

 t1  t1 t0 26 _take  { ' memb 'R ,/ ' maxi ./ } 'L ,/ & at >t1> #  |>| 249
 t1  t1 t0 26 _cut  { ' memb 'R ,/ ' maxi ./ } 'L ,/  & at >t1> #  |>| 174

174 are humped .

On Tuesday, January 5, 2021, 11:38:01 AM EST, andrew warren <treeandysann@yahoo.com> wrote:

Bob I played with FORTH decades ago. I have used PostScript which is forth-like. 


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On Monday, January 4, 2021, 3:18 PM, Bob Armstrong <bob@cosy.com> wrote:

Excellent !

That implies you are understanding quite a lot !

Have you ever used a Forth before ?

I'm trying to find as much time as I can to lock up exception handling . But a lot of it is deeper in the Forth than I have been motivated to dig before . Getting the APL solid and fleshed out and the environment useful for my daily tasks has been the priority .

I'm now going to work thru Reva: Intermediate Tutorial particularly getting an understanding of the memory map . Being able to work w/i the CoSy environment with its search fns , and now the ability to set the cursor to where things are found in the file will be a great advantage .

BobA

| --

On 2021-01-02 12:57, andrew warren wrote:

Thanks: Changing script0 worked, once I figured out I needed to execute ` script0 -> 

On Saturday, January 2, 2021, 12:12:32 PM EST, Bob Armstrong <bob@cosy.com> wrote:

On 2021-01-02 05:30, andrew warren wrote:

Correction. I looked at your screen on the video, and I don't see the stack or the buttons on the bottom, below the text, that you have on your screen.

Perhaps the font and sized of the CoSy window is too tall for your screen ?  I now have a 4K screen and it's like finally having my whole desktop on my desktop . But for a long time I've had either  1920x1080 HD or , until it failed 1920x1200 .  You should see the full screen as visible in the Hello World YouTube , including the $tack display ( $ as an indication that it's hex ) , and some buttons which I have found I hardly ever use .

I see I have the info on editing the startup script , script0 , in a couple of places in the ` state window . Here's how to set the display parameters :

` script0 ->     | display startup script in ` res window

 You will see that while it has some other stuff , the main thing is setting display parameters and you should see 3  ` [IF] choices with settings I find useful depending on whether on desk or notebook , or projector .
Execute

 ` [IF] Help

for an explanation of Reva's conditional compiling words .

Put a 1 for the set you want and 0 for the others . Hit ctrlS to save , then  bye  and reboot .  Once you try that , you can play with the parameters to optimize for your use .

Let me know how that goes .

BobA

|--

On Saturday, January 2, 2021, 05:40:56 AM EST, andrew warren <treeandysann@yahoo.com> wrote:

Hi Bob, 

I have seen the corruption you describe in your first paragraph at times and I think that's what my problem was yesterday: 

I did a clean start and this morning, ` _i :??  now works, as does

s" _i" ??  which I had tried yesterday and also did not work then.   

I responded to your other questions inline below using the format [aw ... ] 

 

Hope this helps - 

Andy

On Friday, January 1, 2021, 07:42:45 PM EST, Bob Armstrong <bob@cosy.com> wrote:

That's weird .

One thing that I'm looking to solve this weekend is that sometimes when restarted something appears to be saved which is corrupt so on restart even F6ing an empty line will bomb .

If CoSy's working correctly so F6ing a blank line just returns _n , nil , for an empty stack .  ( 

[aw - that works]

Have you noticed the $tack shown at the bottom of the dialog ? 

[aw - yes, except mine's at the top]

One of the main differences between F6 and sF6 is that F6 will try to output whatever is on top of the stack as a CoSy list . And if it's not , will likely bomb . That's one thing I'm looking to lock up .

So , if you just execute

 ` _i
_i

or  ` and any other non-blank string it should just return the string .
[ aw - it does ]
It makes me wonder .  Is  :?? failing for some other reason ?
I see the first example of  ?? I give is on itself , both as | ` ?? ?? | and using the more general string | s" ??" ?? |  Do those work ?
[aw - these both work]

Thanks again for the feedback . And this definitely is building useful documentation .

BobA

| --

On 2021-01-01 13:48, andrew warren wrote:

Thanks for getting back to me Bob - still blows up, even using backtick :( 

And sure, feel free to use my emails for your purposes.

Andy

On Friday, January 1, 2021, 12:38:56 PM EST, Bob Armstrong <bob@cosy.com> wrote:

I've been making progress understanding the underlying Forth exception handling and think will get a lot locked up in a couple of days . I can now  `  set the cursor to anywhere in text I want and working at line 2875 at the end of the year in my WorkLog , it is very nice to have it restart right where I left off .  It opens up a lot of possible features .

Always useful to see lines in fixed font since space is the prime delimiter . 
I see the issue is apparently that you didn't  ` tick the word  _i .   I'm thinking how to improve the documentation . 
    ` simply returns the next word as a string . I do see that I say

| NB: tick , ` , makes the next word into a string .
| thus
  s" asdf"   ` asdf   match     |>| 1

 ` See :??     | colon definition of a word  equivalent to
 s" : See" ??

While it's quite recent , I like the notion so much for picking out a word that I use it informally in general writing . It's evolved from K's notation for symbol which marks words with a prefixed ` . Eg: the symbol `_i being a symbol type , rather than ` _i simply returning s" _i" as a string . It's a situation where I found having a separate symbol type just complicates things .

In any case , what you need is

   ` _i :??
(
 ./CoSy/CoSy.f
 
: _i ( cell -- 1_item_intvec )
   1 intVecInit >r> 0 ii! r> ;
 
: 2_i ( i i -- iv iv )  _i swap _i swap ;
 

Without the ` , the verb  _i executes , and it ends up handing nothing to :?? which then bombs .

I should emphasize at the same time the difference between ` and ' .  ( I wish I had a font which distinguished them better . )
 ' , the ordinary single quote is a very fundamental Forth word which gives it a great deal of it's power .
Of course a word normally gets executed as soon as Forth sees it in its simple RPN  read it , do it syntax . What quote , ' , does is return the execution address , the ` xt  of the next word rather than executing it . Thus it's as trivial to put a verb on the stack as noun ( which puts its own address on the stack ) . And it makes what APL calls operators , and J calls adverbs trivial . It's as easy to pass a verb ( function ) as an argument as a noun ( data ) .

Since it's a basic Forth word , it's documented in the Reva Forth help .

  ` ' Help
' ( <name> -- xt ) 'forth
Context: ~
Source in: src/reva.f
    Look up the word "<name>" in the dictionary.  Returns the xt of
    the word in question, or 0 if "<name>" doesn't exist.
   
See also: '' (create) (header) [ ['] ] back compile create does> find find-dict findprev func: func:>xt header vfunc:

I hope that clarifies things .  May I post this on http://www.cosy.com/CoSy/AskMeAnything.html ? I think it's quite valuable documentation .

Thanks again for the feedback .  And may 2021 be a righteous and prosperous year 😌 .

BobA

Peace thru Freedom

Honesty enforced thru Transparency ,

-- Bob@CoSy.com -- Bob Armstrong Vita -- @CoherentSystems -- CoSy  The Shortest Path from the Chip to the Math I reserve the right to post all communications I receive or generate to CoSy website for further reflection

| --

On 2021-01-01 06:03, andrew warren wrote:

Happy New Year CoSy Bob!

I got CoSy to crash. I was following along with your Youtube Zoom video . 

_i :?? crashes it every time.

But other than that, it's working better than it ever has for me.

Still looking for that old laptop (I have a collection of ancient IBM Thinkpads that I got free from a past job.) One of them had APL CoSy and was setup so that the APL fonts worked correctly.

 

On Thursday, December 31, 2020, 10:31:45 AM EST, andrew warren <treeandysann@yahoo.com> wrote:

So far so good! No crashes. I have made many changes to my windows 10 enironment - windows updates and virtualization. 


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On Thursday, December 31, 2020, 10:19 AM, andrew warren <treeandysann@yahoo.com> wrote:

Bob i redownloaded cosy and made it farther than ever before. I will try later on today but so far it hasnt crashed


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On Wednesday, December 30, 2020, 5:48 PM, Bob Armstrong <bob@cosy.com> wrote:

I am spending this week focused on preventing and catching bombs . See the em conversation with Rémy Clarke I just see did not format very well on http://www.cosy.com/CoSy/AskMeAnything.html .

Wow , the APL CoSy is going back ! But the fundamental nature is the same .  I hope my old 1.44 disks will be readable whenever I start assembly my memoirs in a decade or so .
 


CoSy failed for Rémy when he F6ed

R

to show the whole root dictionary . It should have worked . looping thru it works

  R dsc  R 1 _at ' fmt 'm ,L flip
 res> # |>| 211962     | over 200k chars

Anyway , need to get back at it .

BobA

| --

On 2020-12-30 11:43, andrew warren wrote:

I could do Hello World but it crashed after that. 

I’m looking for my old laptop that had APL CoSy :)


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On Saturday, December 26, 2020, 8:50 PM, Bob Armstrong <bob@cosy.com> wrote:

You mean it failed to even boot up to the screen in the Hello World demo ?   And it's not a problem with virus checkers ?

Thanks ,

On 2020-12-25 14:42, andrew warren wrote:

Thanks Bob. I did try CoSy again recently under win 10 but it crashed almost immediately :(


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On Friday, December 25, 2020, 4:32 PM, Bob Armstrong <bob@cosy.com> wrote:

--
Bob A

Peace thru Freedom
Honesty enforced thru Transparency ,

I reserve the right to post all communications I receive or generate to CoSy website for further reflection

--

--
Bob A

Peace thru Freedom
Honesty enforced thru Transparency ,

-- Bob@CoSy.com -- Bob Armstrong Vita -- @CoherentSystems -- CoSy  The Shortest Path from the Chip to the Math I reserve the right to post all communications I receive or generate to CoSy website for further reflection

--