Although I haven't found GoF book useful when looking to solve a problem at work, it has come super handy when preparing for technical interviews. I must admit

Although I haven't found GoF book useful when looking to solve a problem at work, it has come super handy when preparing for technical interviews. I must admit that over the last 10 years I haven't managed to answer any of the Design Patterns questions satisfactorily. Never mind that the roles required Perl/Python scripting skills in the job post.