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

3

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)
}

answered Sep 21, 2020 at 2:02

user652038

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Comments

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

1

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) }

answered Sep 21, 2020 at 2:20

Joya

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