Re: [RFC] [Discussion] Short Closures

Levi Morrison wrote on 07/09/2015 17:56:

     function reduce ($initial) ~> $fn ~> $input ~> {
         $accumulator = $initial;
         foreach ($input as $value) {
             $accumulator = $fn($accumulator, $value);
         }
         return $accumulator;
     }

Hm, this is an interesting idea. I actually think the case for it is *stronger* if ~> was considered special syntax for trivial functions, because if not, there's this odd hybrid, which we probably wouldn't want to allow: function weird_declaration($bar) ~> {

    any();
    code();
    here();

} Whereas this declaration might be quite useful: function double($x) ~> $x * 2; I realise the syntax was only an example, but this way there'd be a nice consistency between named and anonymous functions. I think that would leave your example as: function reduce ($initial) ~> $fn ~> function($input) use ( $initial, $fn) { $accumulator = $initial; foreach ($input as $value) { $accumulator = $fn($accumulator, $value); } return $accumulator; } Regards, -- Rowan Collins [IMSoP]