I'd like to thank my wife, Valesca, for her constant support and for keeping calm and distracting the little ones while I was focused on writing this book, my kids, Gabriela and Caio, for being such wonderful people and a joy in my life, and my parents, for always being there for us.

A great thank you to my friend and co-author, William, for not letting my acid comments corrode his will to get this book done and for being such a curious and committed individual, raising the bar for everyone who happen to work with him.

I'd also like to thank the technical reviewers of the book, especially my friends Vinicius Santos and Daniel Amadei for accepting this tricky task and for being such nice lads to work with.

Finally, I'd like to mention the honey badger as our role model for this project, because he just takes what he wants, and sometimes in life, that's what we should do—in a positive way, of course!

I'd like to thank my wife Rebeca, as she was always supportive and encouraged me several times during the writing, helping me by distracting our little man when he tried to type his own words for the book.

Ant?nio, my son, who also behaved and understood things beyond his age, by letting me write the book while watching Toy Story several times in a row. Love you both more than anything.

Also, a special mention to my family, especially my mother, father, and stepfather. Regina, Ant?nio, and Vanderlei, thank you for giving me the best and for always being supportive during my night hacks.

Thanks to the reviewers, who prevented us from publishing some silly errors and gave us great ideas on how to write things in a clear way, especially my friend and the best man, Daniel Amadei.

And of course, I'd like to thank the Honey Badger and Fabio, for always being so inspirational and hustler on the way we look at computers and programming in general.