C#

while(true)
{
     if(myQueue.Count != 0)
     {
          message = myQueue.Dequeue();
          // Process message
     }

     // Avoids 100% processor occupation
     Thread.Sleep(10);
}

public class Range<T> {
    public T Start { get; set; }
    public T End { get; set; }
}

public class IntRange : Range<Int32> { }

public class DoubleRange : Range<Double> { }

public class DateTimeRange : Range<DateTime> { }

Range<> range = new Range<float>();
range = new IntRange();

range = new DoubleRange();</float>

range = new IntRange();

object obj = range.Start; // should compile

int obj = range.Start; // don't compile

int obj = (int) range.Start; // should compile

public class Range<T> where T : ValueType {
    public T Start { get; set; }
    public T End { get; set; }
}

...

range = new IntRange();

int obj = range.Start; // should compile