Compare query parameters (ignoring order) #61

func uriWithQuery(uriString:String) -> (request:NSURLRequest) -> Bool {
    return { (request:NSURLRequest) in
        if uri(uriString)(request: request) {
            return true
        }

        if let components = NSURLComponents(string: uriString),
            requestComponents = request.URL.flatMap({ NSURLComponents.init(URL: $0, resolvingAgainstBaseURL: false)}) {
            let componentsWithoutParams = components.copy() as! NSURLComponents
            componentsWithoutParams.query = nil

            let requestComponentsWithoutParams = requestComponents.copy() as! NSURLComponents
            requestComponentsWithoutParams.query = nil

            if requestComponentsWithoutParams.URL == componentsWithoutParams.URL {
                return requestComponents.queryItems.flatMap(Set.init) == components.queryItems.flatMap(Set.init)
            }
        }

        return false
    }
}