Why is there no Arrays:with method?

[niclaslindberg]

Maybe I have misunderstood something but why is there no counterpart for the 'with' method?

I.e. invoking

$array = ["a"=>1,"b"=>2, "c"=>3];
$filtered = Arrays::with($array, "a","c");

$filtered is then equal to ["a"=>1,"c"=>3]