Convert dictionary to query string in swift?

Question

I have a dictionary as [String:Any].Now i want to convert this dictionary keys & value as key=value&key=value.I have created below extensio

Answer 1

import Foundation

    extension URL {
        var queryItemsDictionary: [String: String] {
            var queryItemsDictionary = [String: String]()

            // we replace the "+" to space and then encode space to "%20" otherwise after creating URLComponents object
            // it's not possible to distinguish the real percent from the space in the original URL
            let plusEncodedString = self.absoluteString.replacingOccurrences(of: "+", with: "%20")

            if let queryItems = URLComponents(string: plusEncodedString)?.queryItems {
                queryItems.forEach { queryItemsDictionary[$0.name] = $0.value }
            }
            return queryItemsDictionary
        }
    }

That extension will allow you to parse URL where you have both encoded + sign and space with plus, for example:

https://stackoverflow.com/?q=First+question&email=mail%2B10@mail.com

That extension will parse "q" as "First question" and "email" as "mail+10@mail.com"