Den 2019-04-08 kl. 16:06, skrev Nikita Popov:
On Wed, Mar 13, 2019 at 4:56 PM Nikita Popov <nikita....@gmail.com> wrote:
Hi internals,
Motivated by the recent list comprehensions RFC, I think it's time we took
another look at short closures:
https://wiki.php.net/rfc/arrow_functions_v2
This is based on a previous (withdrawn) proposal by Levi & Bob. It uses
the syntax
fn($x) => $x * $multiplier
and implicit by-value variable binding. This example is roughly equivalent
to:
function($x) use($multiplier) { return $x * $multiplier; }
The RFC contains a detailed discussion of syntax choices and binding modes.
Regards,
Nikita
Heads up: I plan to start voting on this RFC tomorrow if nothing new comes
up.
Most of the discussion was (as expected) about the choice of syntax.
Ultimately I think there are many reasonable choices we can make here, but
we should stick to a specific proposal for the purposes of the RFC vote.
None of the given arguments convinced me that some other syntax is
*strictly* better than the proposed fn($x, $y) => $x*$y -- it's more a
matter of some choices being slightly better in one case and slightly worse
in another. My personal runner-up would be \($x, $y) => $x*$y, but I
suspect that there are some people who are more strongly biased against
"sigil salad" than I am...
Nikita
Hi,
I recall that the perception of the ==> syntax in the Hacklang user
community was quite positive. Of course it was implementation
difficulties. Are they still to cumbersome in PHP?
Personally I prefer that one being more readable or the \ one.
Anyway, glad to see that short closures finally is on the road
again!
r//Björn L
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