/**
* @inheritdoc
*/
public function toDictionary($keySelector, $valueSelector = null)
{
$result = new Dictionary();
$keyFunc = $this->resolveFunction($keySelector);
$valueFunc = $this->resolveFunction($valueSelector);
foreach ($this as $item) {
$key = $keyFunc($item);
if ($result->containsKey($key)) {
throw new LogicException(sprintf('Key selection produces duplicated elements "%s".', $key));
}
$result->add($keyFunc($item), $valueFunc($item));
}
return $result;
}
public function testAdd()
{
$dictionary = new Dictionary(array('a' => 1, 'c' => 3));
$dictionary->add('b', 2);
$this->assertEquals(array('a', 'c', 'b'), $dictionary->keys());
$this->assertEquals(array(1, 3, 2), $dictionary->values());
}
