Instance MethodSwift


    Returns a Boolean value indicating whether every element of a sequence satisfies a given predicate.

    func allSatisfy(_ predicate: (Self.Element) throws -> Bool) rethrows -> Bool



    A closure that takes an element of the sequence as its argument and returns a Boolean value that indicates whether the passed element satisfies a condition.


    true if the sequence contains only elements that satisfy predicate; otherwise, false.


    The following code uses this method to test whether all the names in an array have at least five characters:

    let names = ["Sofia", "Camilla", "Martina", "Mateo", "Nicolás"]
    let allHaveAtLeastFive = names.allSatisfy({ $0.count >= 5 })
    // allHaveAtLeastFive == true

    If the sequence is empty, this method returns true.