public function testDeferredEvaluation()
{
$doubleOdds = new Container();
$doubleOdds->filter('Dash\\Functions\\isOdd')->map(function ($n) {
return $n * 2;
});
$this->assertEquals(array(2, 6), $doubleOdds->with(array(1, 2, 3))->value());
$this->assertEquals(array(14, 18, 22, 26), $doubleOdds->with(array(7, 9, 11, 13))->value());
}
public function testNegateInChain()
{
$isPositive = function ($value) {
return $value > 0;
};
$container = new Container(array(2, -3, 5, -8));
$negatives = $container->filter(Functions\negate($isPositive))->values()->value();
$this->assertEquals(array(-3, -8), $negatives);
}
