On Tue, 18 Apr 2023 at 22:01, Bob Magic <b...@majdak.net> wrote:
>
> > [1] In fact if the right hand side of with may be an expression that
> > evaluates to an array, folks wouldn't need to learn new syntax at all:
> >
> > $newProperties = [ "foo" => "bar" ];
> > clone $object with $newProperties;
> >
> > and
> >
> > clone $object with [ "foo" => "bar" ];
>
> in my opinion this is sick, as in awesome. the {} version makes no sense to
> me unless the language gains $var = {} ; to skip $var = (object)[];
I think the {...} is meant to be simply an "argument list", not a value.
But yes having an array here would add some flexibility. It would also
give us argument unpacking for free.
I wonder what this means for performance.
Will the expression always be evaluated as an array first, and then
applied, or can php do a "shortcut" where it internally treats it as
an argument list, even though the syntax implies array?
The different will be small, but it could become relevant if called
many times over.
-- Andreas
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