实例方法
lexicographically
lexicographicallyPrecedes(_:)
返回一个布尔值,指示该序列是否在字典(字典)排序中位于另一个序列之前,使用小于运算符 (
<
) 比较元素。声明
func lexicographicallyPrecedes<OtherSequence>(_ other: OtherSequence) -> Bool where OtherSequence : Sequence, Self.Element == OtherSequence.Element
当
Element
符合 Comparable
时可用。返回值
true
如果此序列在字典排序中位于 other
之前;否则,false
。
参数
other
要与此序列进行比较的序列。
详述
此示例使用 lexicographicallyPrecedes
方法来测试在字典顺序中哪个整数数组排在第一位。
let a = [1, 2, 2, 2]
let b = [1, 2, 3, 4]
print(a.lexicographicallyPrecedes(b))
// Prints "true"
print(b.lexicographicallyPrecedes(b))
// Prints "false"
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
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注:本文由纯净天空筛选整理自apple.com大神的英文原创作品 LazyMapSequence.Iterator lexicographicallyPrecedes(_:)。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。