实例方法
all
allSatisfy(_:)
返回一个布尔值,指示序列的每个元素是否满足给定的谓词。
声明
func allSatisfy(_ predicate: (Self.Element) throws -> Bool) rethrows -> Bool
返回值
true
如果序列仅包含满足 predicate
的元素;否则,false
。
参数
predicate
一个闭包,它将序列的一个元素作为其参数并返回一个布尔值,该值指示传递的元素是否满足条件。
详述
以下代码使用此方法测试数组中的所有名称是否至少包含五个字符:
let names = ["Sofia", "Camilla", "Martina", "Mateo", "Nicolás"]
let allHaveAtLeastFive = names.allSatisfy({ $0.count >= 5 })
// allHaveAtLeastFive == true
如果序列为空,则此方法返回 true
。
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 UnsafeMutableRawBufferPointer allSatisfy(_:)。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。