Swift: How do I print out the value of a dictionary key inside a string expression?

Question

For some reason, I just can't make this expression work:

let expandedBio: Dictionary<String,AnyObject> = ["name":"Saurabh", "profession":"developer", "language":"java", "employed": true]

if let employed : AnyObject = expandedBio["employed"] {
    println("\(expandedBio[\"name\"]) is not available")
}

How do I output the println statement? I get the error

Unexpected "" character  error in string interpolation

How do I do this right?

This problem is solved in swift 2.1 – pabloa98 Dec 18 '15 at 17:05 — pabloa98, Dec 18 '15 at 17:05

Kreiri · Accepted Answer · 2014-06-17T14:00:05.977

5

In current version of Swift you have to put value in its own constant/variable first, then use that.

if let employed : AnyObject = expandedBio["employed"] {
    let t = expandedBio["name"]
    println("\(t) is not available")
}

edited Jun 17 '14 at 14:00

answered Jun 17 '14 at 13:27

Kreiri

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I had to use `let t : AnyObject? = expandedBio["name"]` – Amit Erandole Jun 17 '14 at 13:29
not necessarily but recommended for a better readability. – seafoxx Jul 23 '14 at 20:44
While the "if let employed" already expects that "employed" might be nil (and so can handle that situation), the simple assignment of "t" might result in a nil value -> "Because it is possible to request a key for which no value exists, a dictionary's subscript returns an optional value of the dictionary's value type." -> Thus you should make that optional clear by defining t as "AnyObject?" – seafoxx Jul 23 '14 at 20:52
This problem is solved in swift 2.1 – pabloa98 Dec 18 '15 at 17:05

Swift: How do I print out the value of a dictionary key inside a string expression?

1 Answers1