public function testCount()
{
$this->assertSame(5, count([1, 2, 3, 4, 5]));
$this->assertSame(5, count(toIter([1, 2, 3, 4, 5])));
$this->assertSame(42, count(new _CountableTestDummy()));
}
public function provideTestAssertIterableFails()
{
(yield [function () {
_assertIterable(new \stdClass(), 'Argument');
}, 'Argument must be iterable']);
(yield [function () {
_assertIterable("foobar", 'Argument');
}, 'Argument must be iterable']);
(yield [function () {
_assertAllIterable([[], new \stdClass()]);
}, 'Argument 2 must be iterable']);
(yield [function () {
return count(new \stdClass());
}, 'Argument must be iterable or implement Countable']);
(yield [function () {
return toIter(new \stdClass());
}, 'Argument must be iterable']);
(yield [function () {
return map(function ($v) {
return $v;
}, new \stdClass());
}, 'Second argument must be iterable']);
(yield [function () {
return chain([1], [2], new \stdClass());
}, 'Argument 3 must be iterable']);
(yield [function () {
return zip([1], [2], new \stdClass());
}, 'Argument 3 must be iterable']);
}
/**
* Combines an iterable for keys and another for values into one iterator.
*
* Examples:
*
* iter\zipKeyValue(['a', 'b', 'c'], [1, 2, 3])
* => iter('a' => 1, 'b' => 2, 'c' => 3)
*
* @param mixed $keys Iterable of keys
* @param mixed $values Iterable of values
*
* @return \Iterator
*/
function zipKeyValue($keys, $values)
{
$keys = toIter($keys);
$values = toIter($values);
for ($keys->rewind(), $values->rewind(); $keys->valid() && $values->valid(); $keys->next(), $values->next()) {
(yield $keys->current() => $values->current());
}
}
