C#

enum foo : 4bit
{
  toggleA = 0001,
  toggleB = 0010,
  toggleC = 0100,
  toggleD = 1000,
}

value1 = 0101 = (toggleC | toggleA)  = (0100 | 0001)
value2 = 0100 = (toggleC & value1 )  = (0100 & 0101)
value3 = 0001 = (value2  ^ value1 )  = (0100 ^ 0101)

[Flags]
public enum Options
{
  None = 0, // Common to have 0 be "none" or something
  Option1 = 1, // 0x01
  Option2 = 2, // 0x02
  Option3 = 4, // 0x04
  Option4 = 8, // 0x08
  Option5 = 16, // 0x10
  Option6 = 32, // 0x20
  Option7 = 64, // 0x40
  Option8 = 128 // 0x80
}

if ((myClass1.Options & Options.Option4) != 0)
{
  // Do something if Options.Option4 is set
}

public class MyClass
{
  private Options options;
  public Options Options
  {
    get { return this.options; }
    set { this.options = value; }
  }
}

[Test]
public void TestOpPrecedence()
{
	int i = 10;
	int count = 15;

	Assert.AreEqual(4, count - 1 - i);
	Assert.AreEqual(4, count - i - 1);
	Assert.AreEqual(10, i);
	Assert.AreEqual(15, count);

	byte[] bytes = new byte[5] { 0, 1, 2, 3, 4 };

	Assert.AreEqual(4, bytes[count - 1 - i]);
	Assert.AreEqual(4, bytes[(count - 1) - i]);			
	Assert.AreEqual(4, bytes[count - i - 1]);
}

using (FileStream file = File.Open("somefile.html", FileMode.Open))
{
  string line = null;
  using (StreamReader reader = new StreamReader(file, Encoding.UTF8, true))
  {
    // It's bad to use reader.ReadToEnd - you might not have enough memory
    line = reader.ReadLine();
    // Do something with the 'line'
  }
}

"If a man empties his purse into his head, no man can take it away from him, for an investment in knowledge pays the best interest." -- Joseph E. O'Donnell

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