Implementing decode for a 2-D array

[AndrewSB]

I have an object Song

struct Song {
    ...
    let frequencies: [[Int]]
}

and right now I'm parsing it so:

guard let arrayOfFrequencies = e.rawValue.valueForKeyPath("frequencies") as? [AnyObject] else {
    throw customError("frequency parsing failed")
}       
guard let twoD = arrayOfFrequencies.map({ $0 as? [Int] }) as? [[Int]] else {        
    throw customError("frequency parsing failed")
}       

Is this the way I should be decoding it? Can I use Himotoki to make my life easier?

[ikesyo]

How about this?

(e <|| "frequencies").map { (e: Extractor) throws -> [Int] in
    return try [Int].decode(e.rawValue)
}

[AndrewSB]

@ikesyo this looks great to me 🎉
I'll test it out soon and close this if it works 😄

[ikesyo]

@AndrewSB Any updates on this?

[AndrewSB]

yup! this was perfect. Thanks @ikesyo