Some::flatMap( $callable )
Source
File: vendor/phpoption/phpoption/src/PhpOption/Some.php
public function flatMap($callable)
{
$rs = call_user_func($callable, $this->value);
if ( ! $rs instanceof Option) {
throw new \RuntimeException('Callables passed to flatMap() must return an Option. Maybe you should use map() instead?');
}
return $rs;
}