Thanks for your help but I have a question about the Design Patterns by GOF.
What is the recommended readings for this.
I have searched and found that the two books below are good, which do you recommend or there is another books.
Thanks for help.
Design Patterns Explained: A New Perspective on Object-Oriented Design by Alan Shalloway (Author), James R. Trott (Author)
Design Patterns by Erich Gamma (Author), Richard Helm (Author), Ralph Johnson (Author), John Vlissides (Author)