Escaping Parameters

private func escapedParameters(parameters: [String:]) -> String {
	if parameters.isEmpty {
		return ""
	} else {
		var keyValuePairs = [String]()

		for(key, value) in parameters {

			let stringVavlue "\(value)"

			let escapeValue = stringValue.
				stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())

			keyValuePairs.append(key + "=" + "\(escapedValue!)")
		}

		return "?\(keyValuePairs.joinWithSeparator("&"))"
	}

}

let someParameters = [
	"course": "networking",
	"hogehoge":"ios",
	"quiz":"escaping parameters"
]

print(escapedParameters(someParameters))