50 specific ways to improve your C# 50 Specific Ways to Improve Your XML 统一题名：50 Specific Ways to Improve Your XML 55 specific ways to improve your programs and designs 52 specific ways to improve your iOS and OS X programs More Effective C#: 50 specific ways to improve your C# 61 specific ways to write better SQL 48 specific ways to write better ruby 90 specific ways to write better Python 59 specific ways to write better python