Return Value 戻り値
true if member exists in the set; otherwise, false.
Instance Method
インスタンスメソッド
contains(_:)
Returns a Boolean value that indicates whether the given element exists in the set.
Availability 有効性
- iOS 15.0+
- iPadOS 15.0+
- macOS 12.0+
- Mac Catalyst 15.0+
- tvOS 15.0+
- watchOS 8.0+
Technology
- Swift
UI
Declaration 宣言
func contains(_ member: AccessibilityTechnologies ) -> BoolParameters パラメータ
memberAn element to look for in the set.
Discussion 議論
This example uses the contains(_:) method to test whether an integer is a member of a set of prime numbers.
let primes: Set = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37]
let x = 5
if primes.contains(x) {
print("\(x) is prime!")
} else {
print("\(x). Not prime.")
}
// Prints "5 is prime!"