func keysSortedByValue (using: Selector) -> [Any]
Returns an array of the dictionary’s keys, in the order they would be in if the dictionary were sorted by its values.
辞書の持つキーそれらの配列を返します、もし辞書がそれの値それらでソートされたならば、その状態の順番で。
func keysSortedByValue (comparator: (Any, Any) -> ComparisonResult) -> [Any]
Returns an array of the dictionary’s keys, in the order they would be in if the dictionary were sorted by its values using a given comparator block.
辞書の持つキーそれらの配列を返します、ある与えられた比較子ブロックを使ってもし辞書がそれの値それらでソートされたならば、その状態の順番で。