假设我有两个数组：
let letterArray = ["a","b","c","d","e"...] let numberArray = [1,2,3,4,5,6,7...]
我想组合两个数组,以便我得到一个输出
["a1","b2","c3","d4","e5"]
我该怎么做呢？
解决方法
您可以在地图前使用
zip(_:_:)：
let a = ["a","e"]
let b = [1,5]
let result = zip(a,b).map{$0 + String($1)}
print(result) // => ["a1","e5"]
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.
