ArrayInstance MethodschunkconcatdifferencedifferenceBydifferenceWithdropdropRightdropRightWhiledropWhilefindIndexfindLastIndexintersectionintersectionByintersectionWithsliceDateInstance MethodsisAfterisBeforetoStringtoStringPropertieserayearmonthdayminutesecondnanosecondweekdayweekdayOrdinalquarterweekOfMonthweekOfYearIntdigitsdownTofactorialisEvenisInisOddtimesupToStringdatePowered by findIndexfindIndex(predicate: (Element) -> Bool) -> Int?Returns the index of the first element predicate returns true for. Parameters predicate: The function invoked per iteration. Returns Returns the index of the found element, else nil. Swift[1,2,3,4,5].findIndex{$0 % 2 == 0} // -> 1
