Question

我有一个像这样附加数组的问题：

var medicine = [(String, String?)]()

从Parse SDK我得到两个数组：

medicinesNames = ["Zyrtec", "medicine1", "medicine2"]和
let amountName = ["2 times a day" , "in the morning", "after lunch"]

问题是如何在这些数组中附加带有字符串的属性数组？
我想将它附加到单独的函数中。第一乐趣的输出：
[("Zyrtec", nil), ("medicine1", nil)... ]
在第二次有趣之后我想得到这样的财产：
[("Zyrtec", "2 times a day"), ("Medicine1", "in the morning"),...]

Answer 1

我建议通过两个函数更简洁：

let medicinesNames = ["Zyrtec", "medicine1", "medicine2"]
let amountName = ["2 times a day" , "in the morning", "after lunch"]

let medicine = Array(zip(medicinesNames, amountName))

medicine的类型为[(String, String)]，值为：

[("Zyrtec", "2 times a day"), ("medicine1", "in the morning"), ("medicine2", "after lunch")]

Answer 2

使用重复循环

可以从两个独立的数组创建元组数组

var medicine = [(String, String?)]()

let medicinesNames = ["Zyrtec", "medicine1", "medicine2"]
let amountName = ["2 times a day" , "in the morning", "after lunch"]
assert(medicinesNames.count == amountName.count, "both arrays must contain the same number of items")
for i in 0..<medicinesNames.count {
  medicine.append((medicinesNames[i], amountName[i]))
}

实际上没有时间的药物是不可能的，我建议将数组声明为非可选的[(String, String)]

在swift中添加数组

2 个答案: