Initializerswift 6.0.1Swift

    init(uniqueKeysWithValues:)

    Creates a new dictionary from the key-value pairs in the given sequence.

    init<S>(uniqueKeysWithValues keysAndValues: S) where S : Sequence, S.Element == (Key, Value)
    Mangled symbol

    sSD20uniqueKeysWithValuesSDyxq_Gqd__n_tcSTRd__x_q_t7ElementRtd__lufcWhat are these?

    FNV24: [4XF69]

    Parameters

    keysAndValues

    A sequence of key-value pairs to use for the new dictionary. Every key in keysAndValues must be unique.

    Returns

    A new dictionary initialized with the elements of keysAndValues.

    You use this initializer to create a dictionary when you have a sequence of key-value tuples with unique keys. Passing a sequence with duplicate keys to this initializer results in a runtime error. If your sequence might have duplicate keys, use the Dictionary(_:uniquingKeysWith:) initializer instead.

    The following example creates a new dictionary using an array of strings as the keys and the integers in a countable range as the values:

    let digitWords = ["one", "two", "three", "four", "five"]
let wordToValue = Dictionary(uniqueKeysWithValues: zip(digitWords, 1...5))
print(wordToValue["three"]!)
// Prints "3"
print(wordToValue)
// Prints "["three": 3, "four": 4, "five": 5, "one": 1, "two": 2]"

    Other members in extension

    Typealiases

    • typealias Element

      The element type of a dictionary: a tuple containing an individual key-value pair.

    Type members