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Re: Is a PIP for Syntax extensions necessary? (Was; post-N246 Read- and Write-Option variable_names/1)

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So we have two victims in 2024, two
things died in 2024, are pepsi now:

- Scryer Prolog

- SWI-Prolog Dicts

LoL

Mild Shock schrieb:
> Anything that touches or depends on syntax
> is a complete can of worms. The ISO commitee
> was not able to find an initial *english natural
> 
> language specification wording* for character
> look-ahead, so that we find now character
> look-ahead in Prolog compounds practially
> 
> implemented by all Prolog systems, but character
> look-ahead interpretation may differ for
> negative numbers, like here:
> 
> /* SWI-Prolog */
> ?- X = - 1^2, write_canonical(X), nl.
> -(^(1,2))
> 
> /* Scryer Prolog */
> ?- X = - 1^2, write_canonical(X), nl.
> ^(-1,2)
> 
> But in the case of Scryer Prolog it doesn't
> matter, since Scryer Prolog is anyway dead.
> 
> Mild Shock schrieb:
>> I have a question, does SWI-Prolog not anymore use
>> their dict syntax in the Janus interface:
>>
>>  > import janus_swi as janus
>>  > janus.query_once("Y is X+1", {"X":1})
>> {'Y': 2, 'truth': True}
>>
>> I don’t see _{...} anymore. When and how did this
>> happen? I was just thinking whether a Syntax
>> extension PIP is necessary. Such a PIP isn’t listed:
>>
>> https://prolog-lang.org/ImplementersForum/PIPs.html
>>
>> Is SWI-Prolog safe, against parsing problems,
>> when it still has block operators in the
>> background? Like can one mix and match
>>
>> code that uses Janus interface with the
>> “new” dicts with other code that uses the
>> SWI-Prolog dicts based on _{...}
>>
>> which we might now term the “old” dicts.
>> How do you access and manipulate the
>> “new” dicts, do the “old” operations work?

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Thread

DCG restrictions on the left-hand side [Novacore] Mild Shock <janburse@fastmail.fm> - 2024-07-30 20:39 +0200
  Re: DCG restrictions on the left-hand side [Novacore] Mild Shock <janburse@fastmail.fm> - 2024-07-30 20:43 +0200
    Re: DCG restrictions on the left-hand side [Novacore] Mild Shock <janburse@fastmail.fm> - 2024-07-30 20:45 +0200
      Re: DCG restrictions on the left-hand side [Novacore] Mild Shock <janburse@fastmail.fm> - 2024-07-31 07:55 +0200
        Re: DCG restrictions on the left-hand side [Novacore] Mild Shock <janburse@fastmail.fm> - 2024-07-31 08:07 +0200
  post-N246 Read- and Write-Option variable_names/1 (Was: DCG restrictions on the left-hand side [Novacore]) Mild Shock <janburse@fastmail.fm> - 2024-08-10 20:20 +0200
    Re: post-N246 Read- and Write-Option variable_names/1 (Was: DCG restrictions on the left-hand side [Novacore]) Mild Shock <janburse@fastmail.fm> - 2024-08-10 20:33 +0200
      Is a PIP for Syntax extensions necessary? (Was; post-N246 Read- and Write-Option variable_names/1) Mild Shock <janburse@fastmail.fm> - 2024-08-11 00:02 +0200
        Re: Is a PIP for Syntax extensions necessary? (Was; post-N246 Read- and Write-Option variable_names/1) Mild Shock <janburse@fastmail.fm> - 2024-08-11 00:05 +0200
          Re: Is a PIP for Syntax extensions necessary? (Was; post-N246 Read- and Write-Option variable_names/1) Mild Shock <janburse@fastmail.fm> - 2024-08-11 00:16 +0200
            Re: Is a PIP for Syntax extensions necessary? (Was; post-N246 Read- and Write-Option variable_names/1) Mild Shock <janburse@fastmail.fm> - 2024-08-11 00:25 +0200
              Re: Is a PIP for Syntax extensions necessary? (Was; post-N246 Read- and Write-Option variable_names/1) Mild Shock <janburse@fastmail.fm> - 2024-08-11 14:46 +0200
  A PIP classification scheme is needed (Was: DCG restrictions on the left-hand side [Novacore]) Mild Shock <janburse@fastmail.fm> - 2024-08-13 11:18 +0200
    Re: A PIP classification scheme is needed (Was: DCG restrictions on the left-hand side [Novacore]) Mild Shock <janburse@fastmail.fm> - 2024-08-13 11:23 +0200
      Re: A PIP classification scheme is needed (Was: DCG restrictions on the left-hand side [Novacore]) Mild Shock <janburse@fastmail.fm> - 2024-08-13 13:08 +0200

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