/**
* @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 testTryGetValue()
{
$value = null;
$dictionary = new Dictionary(array('a' => 1, 'b' => 2, 'c' => 3));
$this->assertEquals(false, $dictionary->tryGetValue('d', $value));
$this->assertEquals(null, $value);
$this->assertEquals(true, $dictionary->tryGetValue('b', $value));
$this->assertEquals(2, $value);
}
