Re: The ,= operator

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From:

Joseph Brenner

Date:

November 29, 2020 17:16

Subject:

Re: The ,= operator

Message ID:

CAFfgvXX5QbVkFWn2r7_TjkyuCDFfm-NhPu9mF4FAYCCoJJci0A@mail.gmail.com

William Michels <wjm1@caa.columbia.edu> wrote:
>> > "Perhaps more importantly, what improvement do you propose?"
>
> Apologies for top-posting, but what immediately comes to my mind upon
> encountering the creation of a self-referential (circular/infinite)
> object is proverbially 'going-down-a-level' and trying again. So I
> tried 1. 'decontainerizing' the object on the LHS, and then 2. using
> the ",=" postfix to add an additional element (or many). Nothing
> worked.

I think the trouble with ideas like that is once you accept that

  @a ,= 'd';

Is necessarily a short-form of:

  @a = @a, 'd';

You can see the thing you need to decontainerize is that @a on
the RHS:

  @a = | @a, 'd';

But you can't get at it in the short form.

(So you wouldn't normally try to use the short form with arrays.)

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