/** {@inheritdoc} */
public function offsetSet($offset, $value)
{
if (!is_array($value)) {
throw new \InvalidArgumentException(self::ERROR_LOOKUP_VALUE_NOT_ARRAY);
}
parent::offsetSet($offset, $value);
}
/**
* <p><b>Syntax</b>: toDictionary ([keySelector {{(v, k) ==> key} [, valueSelector {{(v, k) ==> value}]])
* <p>Creates a {@link Dictionary} from a sequence according to specified key selector and value selector functions.
* <p>The toDictionary method returns a Dictionary, a one-to-one dictionary that maps keys to values. If the source sequence contains multiple values with the same key, the result dictionary will only contain the latter value.
* @param callable|null $keySelector {(v, k) ==> key} A function to extract a key from each element. Default: key.
* @param callable|null $valueSelector {(v, k) ==> value} A transform function to produce a result value from each element. Default: value.
* @return collections\Dictionary A Dictionary that contains values selected from the input sequence.
*/
public function toDictionary($keySelector = null, $valueSelector = null)
{
$keySelector = Utils::createLambda($keySelector, 'v,k', Functions::$key);
$valueSelector = Utils::createLambda($valueSelector, 'v,k', Functions::$value);
$dic = new c\Dictionary();
foreach ($this as $k => $v) {
$dic->offsetSet(call_user_func($keySelector, $v, $k), call_user_func($valueSelector, $v, $k));
}
return $dic;
}
