krzyzanowskim

import Cocoa

// for-in
func checkForIn(array: [Int], dict: [Int: String]) {
    for num in array where dict[num] != nil {
        num
    }
}

checkForIn([1,2,3,4], dict: [1:"one", 2:"two"])

loganwright

import Foundation

extension Dictionary {
    mutating public func setValue(val: AnyObject, forKeyPath keyPath: String) {
        var keys = keyPath.componentsSeparatedByString(".")
        guard let first = keys.first as? Key else { print("Unable to use string as key on type: \(Key.self)"); return }
        keys.removeAtIndex(0)
        if keys.isEmpty, let settable = val as? Value {
            self[first] = settable
        } else {