2023-07-17 18:58 GMT+02:00, Larry Garfield <la...@garfieldtech.com>: > On Mon, Jul 17, 2023, at 2:57 PM, Olle Härstedt wrote: >> 2023-07-17 14:25 GMT+02:00, Karoly Negyesi <kar...@negyesi.net>: >>> Hi, >>> >>> I tried to read on why the pipe RFC failed but by and large I also >>> failed. >>> >>> The discussion on https://github.com/php/php-src/pull/7214 is very >>> short. >>> >>> https://externals.io/message/114770 is not so short but it seems not to >>> cover the latest version which uses first class functions? >>> >>> Could someone please give me a summary why it failed? I really would >>> like >>> to see it succeed :) I am writing code if not daily but certainly weekly >>> that certainly looks like a pipeline. >> >> The pipe RFC was kinda forced in before a deadline, no? >> >> My own two cents: >> >> * It's trivial to implement a pipe() function or a Pipe class >> * A Pipe class is better than both a function and built-in operator, >> since it can be configured with custom behaviour, e.g. stop or throw >> on empty payload, or repeat on a collection, or even with parallelism >> or concurrency >> * If I had voting rights, I'd vote in favor in a pipe operator :) > > From my recollection, there were a couple of things involved. > > 1. It was intended to pair with the PFA RFC, which didn't pass, which made > it a bit less compelling. > 2. It was close to the RFC deadline, and it seems people get squeamish > around that. > 3. Some folks wanted Hack-style pipes instead of the pipes used by every > other language with pipes. I've written before on why that's a worse > design. > 4. Arguments that it can be done in user space, which is not true, as I have > a user-space implementation and it's comparatively cumbersome and definitely > slower than a native operator would be. > 5. General "meh" attitude on FP features in general from some people. > > Side note to Olle: If you want a customizable pipe, you've just described a > Monad. :-) It's literally "contextually-sensitive func concatenation." A > monadic bind operator would be harder to do with PHP's weaker type system, > but there are ways it could be done.
Mm I don't really agree with that, I think monads make sense only in languages which support them syntactically. A Pipe class is a very straight-forward construction, and the blog posts I've read about monads in PHP don't look pretty at all; lots of syntactic noise going on. But that's another discussion... :) Olle -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: https://www.php.net/unsub.php
