ios – 在Swift中使用“Map”创建两个数组的超集

let a = ["a","e"]
let b = [1,5]

let result = zip(a,b).map{$0 + String($1)}

print(result) // => ["a1","e5"]

You can try this code here.

zip(_:_:)生成一个自定义Zip2Sequence,它具有SequenceType协议的特殊实现,因此它迭代由两个源集合组成的对.