2021-07-04 4:12 GMT+02:00, Larry Garfield <la...@garfieldtech.com>: > On Mon, Jun 7, 2021, at 2:00 PM, Larry Garfield wrote: >> Hi folks. Me again. >> >> A year ago, I posted an RFC for a pipe operator, |>, aka function >> concatenation. At the time, the main thrust of the feedback was "cool, >> like, but we need partial function application first so that the syntax >> for callables isn't so crappy." >> >> The PFA RFC is winding down now and is looking quite good, so it's time >> to revisit pipes. >> >> https://wiki.php.net/rfc/pipe-operator-v2 >> >> Nothing radical has changed in the proposal since last year. I have >> updated it against the latest master. I also updated the RFC to use >> more examples that assume PFA, as the result is legit much nicer. i >> also tested it locally with a combined partials-and-pipes branch to >> make sure they play nicely together, and they do. (Yay!) Assuming PFA >> passes I will include those tests in the pipes branch before this one >> goes to a vote. > > Hi again. > > With PFA being declined, I've again reworked the Pipes RFC. > > 1) It now does not use PFA in any examples, but it does use Nikita's > first-class-callables RFC that looks like it's going to pass easily. > > 2) With major hand-holding from Levi Morrison and Joe Watkins, the > implementation has shifted a bit. It now evaluates left-to-right, always, > whereas the previous version evaluated right-to-left. That is, instead of > $a |> $b |> $c desugaring into $c($b($a)), it now becomes effectively $tmp = > $a; $tmp = $b($tmp); $tmp = $c($tmp); That matters if $b or $c are function > calls that return a callable, as they are then only called when the pipeline > gets to that part of the expression.
Hi! Can you flesh out an example for this, please? Not sure I get the use-case where it matters. Couldn't find any example inside the PR either (the tests) that show-cased this particular implementation detail. Did I miss it? Olle -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: https://www.php.net/unsub.php
