Swift equivalent to `[NSDictionary initWithObjects: forKeys:]`

Question

Is there an equivalent for Swift\'s native Dictionary to [NSDictionary initWithObjects: forKeys:]?

Say I have two arrays with keys and valu

Answer 1

A one-liner, using zip and reduce:

let dict = zip(keys, values).reduce([String:Int]()){ var d = $0; d[$1.0] = $1.1; return d }

You can shorten the reduce expression by defining the + operator for a Dictionary and a tuple:

func +(lhs: [K:V], rhs: (K, V)) -> [K:V] {
    var result = lhs
    result[rhs.0] = rhs.1
    return result
}

let dict = zip(keys, values).reduce([String:Int](), combine: +)