Swift高阶函数-contains、allSatisfy、reversed、lexicographicallyPrecedes
一、contains
返回一个布尔值,指示序列的每个元素是否满足给定的条件。如果有一个满足即返回。
let expenses = [21.37, 55.21, 9.32, 10.18, 388.77, 11.41]
let hasBigPurchase = expenses.contains { $0 > 100 }
// 'hasBigPurchase' ==