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Date: Tue, 20 Jul 2021 16:53:31 +0200
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To: Marco Pivetta <ocramius@gmail.com>
Cc: Larry Garfield <larry@garfieldtech.com>, php internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] [Vote] Pipe operator v2
From: olleharstedt@gmail.com (=?UTF-8?Q?Olle_H=C3=A4rstedt?=)

2021-07-20 11:12 GMT+02:00, Marco Pivetta <ocramius@gmail.com>:
> Hey Larry,
>
> On Sat, Jul 17, 2021 at 6:00 PM Larry Garfield <larry@garfieldtech.com>
> wrote:
>
>> Hi Marco.  Thank you for your explanation, even if I naturally disagree.
>>
>> Out of curiosity, what sort of additional
>> power/capability/flexibility/etc. would, in your mind, justify pipe or
>> similar being a native feature?  PHP has a *ton* of native features that
>> *could* be done in user space, or are simply syntax sugar, but still
>> wildly
>> popular and useful as native syntax.  What is your heuristic for that?
>>
>> (The fact that there are 3-4 user space implementations of pipe-like
>> behavior, all incompatible, is one of the reasons why I think
>> standardizing
>> it into a common core syntax *is* a good idea, though I know others
>> disagree.)
>>
>
> I think the pipe operator as a **custom** operator made sense when we had
> the entire discussion around placeholder parameters (`$$`) to be used in
> the pipeline.
>
> As a plain "chain of functions with one input parameter and one output", it
> makes little sense to have it as a custom construct, as it only adds
> complexity to the AST.

That is the idiomatic implementation, though. Hacklang is the odd man
out with $$.

Olle