Online PHP editor | output for iO13a

<?php class Foo {} class Foos implements IteratorAggregate { private function __construct(private readonly Closure $foos) {} public static function fromVariadic(Foo ...$foos): self { return new self(fn() => yield from $foos); } public static function fromGenerator(callable $generator): self { return new self($generator); } public function getIterator(): \Traversable { return ($this->foos)(); } } //$foos = Foos::fromVariadic(new Foo, new Foo); $foos = Foos::fromGenerator(function() { yield new Foo; yield new Foo; }); foreach ($foos as $foo) { var_dump($foo); }