Instance MethodSwift

    allSatisfy(_:)

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

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

    Parameters

    predicate

    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.

    Returns

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

    Overview

    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.