/**
* Union join the values of one or more with this Seq and return a new Seq
* @param array $arrayLikeN An array of transversable
* @return Seq
*/
public function union(...$arrayLikeN)
{
$output = [$this->hash];
foreach ($arrayLikeN as $arg => $value) {
$output[] = __PRIVATE__::traversableToArray(__CONTRACT__::argIsATraversable($value, $arg));
}
return static::from(call_user_func_array('array_merge', $output));
}
/**
* Checks the return of a callback to be of the expected type
* @param string $classPath
* @param mixed $returnValue
* @return mixed
* @throws \UnexpectedValueException
*/
static function returnIsA($classPath, $returnValue)
{
if ($returnValue instanceof $classPath) {
return $returnValue;
}
throw new invalidReturn($returnValue, "Expected return of {$classPath}, got " . __PRIVATE__::getDescriptor($returnValue));
}
*/
public static function getArity(callable $fn)
{
return self::reflectCallable($fn)->getNumberOfRequiredParameters();
}
// -- Magic Methods --
/**
* @codeCoverageIgnore
*/
protected function __clone()
{
// This space intentionally left blank
}
/**
* @codeCoverageIgnore
*/
protected function __wakeup()
{
// This space intentionally left blank
}
/**
* None constructor.
* @codeCoverageIgnore
*/
protected function __construct()
{
// This space intentionally left blank
}
}
__PRIVATE__::initialize();
/**
* @covers ::getArity
* @dataProvider callableProvider
*/
public function test_getArity(callable $callable, $descriptor)
{
self::assertEquals($descriptor['arity'], internal::getArity($callable));
}
