public function __invoke() : View { $extractShorName = function ($item) { return $item->state->getShortName(); }; $allItems = Item::all(); $newItems = P::pipe(P::filter(P::pipe($extractShorName, P::eq('new'))), 'P::size'); return view('main')->with('items', $allItems)->with('remaining_item_count', $newItems($allItems)); }
public function testPipe() { $triple = function ($x) { return $x * 3; }; $double = function ($x) { return $x * 2; }; $square = function ($x) { return $x * $x; }; $pipe = P::pipe($square, $double, $triple); $this->assertEquals(150, $pipe(5)); }
//-> NAN println(apply($safeDivide)(5, 0)); require_once '../../vendor/autoload.php'; require_once '../ch08/model/User.php'; require_once '../ch08/model/Account.php'; use Model\Account; use Model\User; use Rx\Observable; use Rx\Observer; // SELECT firstname // FROM users // WHERE firstname IS NOT NULL // ORDER BY firstname DESC // LIMIT 1; print_r(P::pipe('\\Model\\User::query', P::map(P::prop('firstname')), P::filter(function ($n) { return !empty($n); }), 'P::reverse', P::take(1))()); P::compose(P::take(1), 'P::reverse', P::filter(function ($n) { return !empty($n); }), P::map(P::prop('firstname')), '\\Model\\User::query')(); // PHP Warning: f() expects // at least 2 parameters, 1 given // $format = P::compose('addExclamation', $repeat(2), 'strtoupper'); // $format('Hello World'); //-> HELLO WORLD HELLO WORLD! $applyTax = P::curry2(function ($rate, $amount) { return $amount + $amount * ($rate / 100); }); $applyTax(6.0); //-> Closure $applyTax(6.0, 100); //-> 106