How do I convert NSDictionary to Dictionary?

For those who have a problem with NSDictionary, simply use this extension:

Swift 3.0

extension NSDictionary {
    var swiftDictionary: Dictionary<String, Any> {
        var swiftDictionary = Dictionary<String, Any>()

        for key : Any in self.allKeys {
            let stringKey = key as! String
            if let keyValue = self.value(forKey: stringKey){
                swiftDictionary[stringKey] = keyValue
            }
        }

        return swiftDictionary
    }
}

• NSDictionary in Objective-C has always non-optional values.
• AnyObject has become Any in Swift 3.
• Considering the first two "rules" NSDictionary can be bridge cast to Dictionary

---

let post_paramsValue = post_params as Dictionary<String,Any>

If the source NSDictionary is an optional you might use as Dictionary<String,Any>? or as? Dictionary<String,Any> or as! Dictionary<String,Any> or as Dictionary<String,Any>! depending on the actual type of the NSDictionary