struct Dictionary.Index The position of a key-value pair in a dictionary. Dictionary has two subscripting interfaces: Subscripting with a key, yielding an optional value: v = d[k]! Subscripting with an index, yielding a key-value pair: (k, v) = d[i] Inheritance Comparable, Equatable, Hashable View Protocol Hierarchy → Import import Swift Instance Variables var hashValue: Int The hash value. Hash values are not guaranteed to be equal across different executions of your program. Do not save hash values to use during a future execution. Declaration var hashValue: Int { get }