PrintNumber	ErrorLocation	Error	Correction	DateAdded
1	19	Listing 2-1 demonstrates how to create an extension method that returns the SHA1 Hash value for a string (with and without extra arguments).	Listing 2-1 demonstrates how to create an extension method that returns the SHA1 Hash value for a string.	4/6/2011
1	80	/* this sample uses the same data as we saw in Table 2-2, but i’ve added 2 Gottshall’s (one from the same state and another out of that state), and 2 Gauwain’s -w 	/* this sample uses the same data as we saw in Table 2-1, but i’ve added 2 Gottshall’s (one from the same state and another out of that state), and 2 Gauwain’s -w 	4/6/2011
1	26	Optional parameters added in C# 4.0 (covered in Chapter 4, “Grouping and Joining Data”) make this somewhat easier, but anonymous types should be considered when results are needed temporarily.	Optional parameters added in C# 4.0 (covered in Chapter 8, “C# 4.0 Features”) make this somewhat easier, but anonymous types should be considered when results are needed temporarily. 	4/6/2011