C# - yield

The yield keyword was introduced with C# 2.0.

Here is some further reading;

• from C# reference -yield (C# Reference)
  
• from stackoverflow - C# - Proper Use of yield return?
• from stackoverflow - What does “yield break;” do in C#?
• from stackoverflow - Yield keyword value added?
• from C# in Depth - Sample Chapter 6 - Implementing iterators the easy way