I hope this helps! Let me know if you have any questions or need further clarification.

// Bad practice func foo() // code

Exporting mutable structs with public fields — breaks encapsulation. Fix: provide getters/setters or return copies.

: You can explore the author's official 100Go website to read a summary of all mistakes or the first chapter for free.

: Teiva Harsanyi maintains a repository containing all the source code examples from the book, allowing you to practice the solutions directly. O'Reilly Learning