Fluent interface for URLComponents

URLComponentsHelpers.swift

private extension NSURLComponents
{
  func withQueryItem(name:String,intValue:Int) -> NSURLComponents {
    return self.withQueryItem(name, stringValue: NSNumber(integer: intValue).stringValue)
  }
  
  func withQueryItem(name:String,floatValue:Float) -> NSURLComponents {
    return self.withQueryItem(name, stringValue: NSNumber(float: floatValue).stringValue)
  }
  
  func withQueryItem(name:String,stringValue:String) -> NSURLComponents {
    let newQueryItem = NSURLQueryItem(name:name,value:stringValue)
    let existingItems = self.queryItems ?? []
    self.queryItems = existingItems + [newQueryItem]
    return self
  }
}