[swift]reduceを使って配列からDictionaryを作る方法

gistfile1.swift

/*
reduceを使って配列からDictionaryを作る方法
url: http://qiita.com/_mpon/items/31d8058715bdc2be2ffa
*/
let queries = ["id=3", "token=abc", "tag=5", "plus=3"]

let params = queries.reduce([String: String]()) { (var dict, q) in
    println(dict)
    println(q)
    let v = q.componentsSeparatedByString("=")
    let (key, value) = (v[0], v[1])
    dict[key] = value
    return dict
}
println(params)
// => ["id": "3", "token": "abc", "tag": "5"]