public function testZipWith()
{
$f = function ($a, $b) {
return $a . $b;
};
$concat = P::compose(['P', 'toArray'], P::zipWith($f));
$concatOneTwo = P::zipWith($f, [1, 2]);
$this->assertEquals(['1a', '2b'], P::toArray(P::zipWith($f, [1, 2], ['a', 'b'])));
$this->assertEquals(['1a', '2b'], $concat([1, 2], ['a', 'b']));
$this->assertEquals(['1a', '2b'], P::toArray($concatOneTwo(['a', 'b'])));
$a = function () {
(yield 'a');
(yield 'b');
};
$this->assertEquals(['1a', '2b'], P::toArray(P::zipWith($f, [1, 2], $a())));
$this->assertEquals(['1a', '2b'], $concat([1, 2], $a()));
}
$applyTax(6.0);
//-> Closure
$applyTax(6.0, 100);
//-> 106
$applyTax(6.0)(100);
//-> 106
// $total = P::compose($currency('USD'), $applyTax(6.0), 'P::sum');
// $total([10.95, 16.99, 25.99]); //-> USD 57.1658
// function findUserById($id) {
// //...
// return Option::fromValue($user);
// }
// $userOpt = Option::fromValue(findUserById(10)); //-> Option(Option(User))
// $userOpt->flatMap(P::prop('address'))->map(P::prop('country'))->get();
$a = function () {
(yield 1);
(yield 3);
};
$modulo = function ($number) {
return $number % 2;
};
$modded = P::toArray(P::map($modulo, $a()));
print_r($modded);
// composition with currying
$input = 'A complex system that works is
invariably found to have evolved
from a simple system that worked';
$explodeOnSpace = P::curry2('explode')(' ');
$countWords = P::compose('count', $explodeOnSpace);
$countWords($input);
//-> 17
