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Date: Thu, 19 Jan 2017 19:12:30 +0100
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Subject: Re: [PHP-DEV] Pipe Operator v2
From: flaupretre@free.fr (=?UTF-8?Q?Fran=c3=a7ois_Laupretre?=)

Le 19/01/2017 à 13:54, Levi Morrison a écrit :
> The `|>` symbol would be the piping operator with these semantics:
>      1. Evaluate the left-hand side.
>      2. Evaluate the right-hand side. Assert that the result is callable.
>      3. Pass the result from 1. as the single argument to 2.

May I suggest extending your 3rd rule to : when the right hand side has 
the form of a function call, insert the result from 1. as first argument 
of 2. This way, right hand side may specify additional arguments. Based 
on the fact that, in 99% of PHP builtin functions where the concept 
applies, the 'input' argument is the first one.

Example :

$string |> trim('.,;:')
$string |> trim()

IMO, not acceptable : $string |> trim

Regards

François