/// <summary>A wrapper over DispatchSync that calls a value-producing function and returns it's result</summary>
/// <typeparam name="T">Result type</typeparam>
/// <param name="queue">The queue to execute the function on</param>
/// <param name="func">The function to execute</param>
/// <returns>The return value of func</returns>
public static T DispatchSync <T>(this IDispatchQueue queue, Func <T> func)
{
T result = default(T);
queue.DispatchSync(() => { result = func(); });
return(result);
}