الكتاب الالكتروني Tuts+ Gang of Design Patterns in Ruby ، تحميل الكتاب الالكتروني Tuts+ Gang of Design Patterns in Ruby ، الكتاب الالكتروني Tuts+ Gang of Design Patterns in Ruby ، الكتاب الالكتروني Tuts+ Gang of Design Patterns in Ruby على أكثر من سيرفر ، الكتاب الالكتروني Tuts+ Gang of Design Patterns in Ruby pdf


Have you been programming for a long time? If so, have you faced any situation that has come to be quite hard to solve? A feature that needs change but affects other features? A bug that's hard to solve because it affects more than one place in your code?




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