function testMapMulti()
{
$a = array(1, 2, 3);
$b = array("one", "two", "three");
$this->assertEquals(array(array(1, "one"), array(2, "two"), array(3, "three")), iterator_to_array(itertools\map(function ($a, $b) {
return array($a, $b);
}, itertools\to_iterator($a), itertools\to_iterator($b))));
}
protected function toIterator($value)
{
return itertools\to_iterator($value);
}
function getTaskPrerequisites()
{
$app = $this->application;
return itertools\filter(itertools\to_iterator($this->prerequisites), function ($task) use($app) {
return $app->taskDefined($task);
});
}
