Method demo

examples/demo.php:823–839

()

class ArrayShapeDemo
{
    public function demo(): void
    {
        // Literal array shape — key completion and value types
        $config = ['host' => 'localhost', 'port' => 3306, 'tool' => new Pen()];
        $config[''];                              // Try: key completion: host, port, tool
        $config['tool']->write();                 // value type → Pen

        // Annotated shape
        /** @var array{first: Pen, second: Pencil} $pair */
        $pair = getUnknownValue();
        $pair['first']->write();
        $pair['second']->sketch();

        // Shape from function return type
        $cfg = getAppConfig();
        $cfg['logger']->write();
    }
}