function test_takeWhile_all()
{
$takeWhile = takeWhile(function ($value) {
return $value % 2 > 0;
});
$input = [1, 3, 5];
$expect = $input;
$actual = iterator_to_array($takeWhile($input));
$this->assertEquals($expect, $actual);
}
public function testTakeOrDropWhile()
{
$this->assertSame([3, 1, 4], toArray(takeWhile(fn\operator('>', 0), [3, 1, 4, -1, 5])));
$this->assertSame([-1, 5], toArray(dropWhile(fn\operator('>', 0), [3, 1, 4, -1, 5])));
$this->assertSame([1, 2, 3], toArray(takeWhile(fn\operator('>', 0), [1, 2, 3])));
$this->assertSame([], toArray(dropWhile(fn\operator('>', 0), [1, 2, 3])));
}
/**
* Removes elements from an array while they match the given predicate. It stops at the
* first element not matching the predicate and does not remove it.
* ```php
* $items = ['Foo', 'Fun', 'Dev', 'Bar', 'Baz'];
* removeWhile(startsWith('F'), $items) // ['Dev', 'Bar', 'Baz']
* removeWhile(startsWith('D'), $items) // ['Foo', 'Fun', 'Dev', 'Bar', 'Baz']
* ```
*
* @signature (a -> Boolean) -> [a] -> [a]
* @param callable $predicate
* @param array $list
* @return array
*/
function removeWhile()
{
$removeWhile = function ($predicate, $list) {
return remove(length(takeWhile($predicate, $list)), $list);
};
return apply(curry($removeWhile), func_get_args());
}
