How can I convert an NSDictionary to a dictionary?

Question

I have already upgraded to Xcode 8 and now I need to convert the code from Swift 2 to Swift 3.

Previously, when I wanted to convert NSDictionaryto Dictionary, I just wrote the following:

let post_paramsValue = post_params as? Dictionary<String,AnyObject?>

where post_paramsis it NSDictionary.

But now with Swift 3, I get this error:

NSDictionary is not convertible to Dictionary

What for? What changed?

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Edit 1

I also tried the following:

let post_paramsValue = post_params as Dictionary<String,Any>

But this gives this error:

---

Edit 2

I also tried the following:

let post_paramsValue =  post_params as Dictionary<String,Any>

Where I declare NSDictionaryinstead NSDictionary!, but this does not work; I got this error:

---

Edit 3

I also tried the following:

let post_paramsValue =  post_params as Dictionary<String,Any>!

But I got this error:

Answer 1

• NSDictionary Objective-C .
• AnyObject Any Swift 3.
• "" NSDictionary Dictionary

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let post_paramsValue = post_params as Dictionary<String,Any>

NSDictionary , as Dictionary<String,Any>? as? Dictionary<String,Any> as! Dictionary<String,Any> as Dictionary<String,Any>! NSDictionary

Answer 2

, NSDictionary, :

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
    }
}