Mapping custom array in Swift

Question

I have an array like this:

let strNames = ["banana", "apple", "mango"]

I am looking for a result like this:

var abc = [Fruit(id: 0, name: "banana"), Fruit(id: 1, name: "apple"), Fruit(id: 2, name: "mango")]

In classic way I can do so far. Can anybody please help me mapping in Swift way?

var abc: [Fruit] = [] for i in 0..<strNames.count { abc.append(Fruit(id: i, name: strNames[i])) }

user652038 · Accepted Answer · 2020-09-21 02:02:09Z

Initializers can be used as functions using this syntax.

["banana", "apple", "mango"].enumerated().map(Fruit.init)

It appears that your Fruit type matches up with EnumeratedSequence.Element exactly.

struct Fruit { let id: Int let name: String }

If it didn't, you'd just need to create your own closure.

["banana", "apple", "mango"].enumerated().map { Fruit(id: $0.offset, name: $0.element) }

Joya · Accepted Answer · 2020-09-21 02:20:02Z

Thank you @Sweeper for your suggestions. Actually this is what I am looking for...

let abc: [Fruit] = strNames.enumerated().map { Fruit(id: $0, name: $1) }

2 Answers 2