Return Value 戻り値
A sequence starting after the specified number of elements.
Instance Method
インスタンスメソッド
drop
dropFirst(_:)
Returns a sequence containing all but the given number of initial elements.
Availability 有効性
- iOS 13.0+
- iPadOS 13.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 13.0+
- watchOS 6.0+
Technology
- Swift
UI
Declaration 宣言
func dropFirst(_ k: Int = 1) -> DropFirstSequence <Self>Parameters パラメータ
kThe number of elements to drop from the beginning of the sequence.
kmust be greater than or equal to zero.kは、ゼロより大きいまたは等しくなければなりません。
Discussion 議論
If the number of elements to drop exceeds the number of elements in the sequence, the result is an empty sequence.
let numbers = [1, 2, 3, 4, 5]
print(numbers.dropFirst(2))
// Prints "[3, 4, 5]"
print(numbers.dropFirst(10))
// Prints "[]"