Den 2017-02-03 kl. 21:46, skrev Levi Morrison:
On Fri, Feb 3, 2017 at 1:37 PM, Niklas Keller <m...@kelunik.com> wrote:
2017-02-03 21:23 GMT+01:00 Levi Morrison <le...@php.net>:
On Fri, Feb 3, 2017 at 12:18 PM, Andrea Faulds <a...@ajf.me> wrote:
Hi David,
David Rodrigues wrote:
Hello folks!
I just not understand why "function" should be abbreviated. It's about
"how
less character better"? I don't see it too much on PHP. I guess that is
more simple keep what exists current "function", that all knows about
(that
should be better than the next example):
$mapped = array_map(function($x) => $x + $y); // vs current:
$mapped = array_map(function($x) use($y) { return $x + $y });
I feel the same way. It would be nice to have shorter syntax, but it
sacrifices readability and familiarity here, and adds yet another new
keyword.
It also feels inconsistent… isn't "fn" just short for "function"? Why is
it
exclusive to the => syntax?
This is not exactly on topic... unless you are implying you'd prefer
the `|$x| => $x + $y`? Maybe you missed [this][1] message?
Why is using "function" instead of "fn" not on topic?
I did not ask for general syntax suggestions. What I am asking about
is specifically what the preference people might have between these
two options:
fn(params) => expr
|params| => expr
As well as potential issues (thanks, Ilija, for pointing out a
theoretical issue with union types).
----
As a disclaimer I'm trying to guide the discussion to these two
options, not suppress suggestions I don't like.
I can live with both, maybe with a preference for the
last one. Using function with another semantic I don't
like at all. Imagine for example if different kind of loops
had the same starting keyword (for for everything ;-).
Also using fn or || helps when searching in a codebase
for all ordinary functions and no arrow ones, e.g. grep
'function(\$' files would give everything with fucntion
keyword.
Anothe angle I came to think of is if PHP in the future
would have async / await functionality. How does that
play together with arrow functions? HHVM has some
example: https://docs.hhvm.com/hack/async/blocks
Anyway, I do appreciate that finally arrow functions in
PHP are on the horizon :-)
Regards //Björn Larsson
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