Instance Methodswift 6.0.3Swift

    indices(where:)

    Returns the indices of all the elements that match the given predicate.

    iOS
    18.0+
    macOS
    15.0+
    tvOS
    18.0+
    visionOS
    2.0+
    watchOS
    11.0+
    func indices(where predicate: (Self.Element) throws -> Bool) rethrows -> RangeSet<Self.Index>
    Mangled symbol
    sSlsE7indices5wheres8RangeSetVy5IndexQzGSb7ElementQzKXE_tKF What are these?
    FNV24 hash
    6EIXZ

    Parameters

    predicate

    A closure that takes an element as its argument and returns a Boolean value that indicates whether the passed element represents a match.

    Returns

    A set of the indices of the elements for which predicate returns true.

    For example, you can use this method to find all the places that a vowel occurs in a string.

    let str = "Fresh cheese in a breeze"
let vowels: Set<Character> = ["a", "e", "i", "o", "u"]
let allTheVowels = str.indices(where: { vowels.contains($0) })
// str[allTheVowels].count == 9