How do I iterate through a [String:[String]] Dictionary in Swift

Question

I have a dictionary.

var params: [String: [String]] = [:]

I assign an array to the first key and the first key only. Now print params prints :

["names" : ["jack", "joe", "jill"]]

How do I iterate through this array at this given key so that I could loop through and print jack, joe, and jill?

for (_, value) in params { value.forEach{print($0)} } – vadian Jun 23 '16 at 14:54 — vadian, Jun 23 '16 at 14:54
`params["names"]?.forEach({print($0)})` – Leo Dabus Jun 23 '16 at 19:31 — Leo Dabus, Jun 23 '16 at 19:31

score 4 · Accepted Answer · answered Jun 23 '16 at 14:46

4

for (key, names) in params {
    for name in names {
        print("\(name))
    }
}

answered Jun 23 '16 at 14:46

Andrew

388
2
9

Anni S · Answer 2 · 2016-06-23T14:58:01.193

var params: [String: [String]] = ["names" : ["jack", "joe", "jill"]]
            for key in params.keys {
                NSLog("%@", key)
                let list = params[key]
                for obj in list! {
                    NSLog("%@", obj)
                }
            }

Using tuples:

let params: [String: [String]] = ["names" : ["jack", "joe", "jill"]]
        for (key, names) in params {
            print("\(key)")
            for name in names {
                print("\(name)")
            }
        }

How do I iterate through a [String:[String]] Dictionary in Swift

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