Wladston Ferreira FilhoWladston Filho

Wlad holds a master's degree in computer science, and is the author of Computer Science Distilled and Computer Science Unleashed, which explain the basics of using computers to solve interesting problems.

Finding Magic Word Squares

Palindromic sentences read the same both ways, but magic word squares go further. This post explores the ancient Sator Square—a 5×5 Latin grid—and demonstrates how to find similar patterns in English using Python. Programming helps uncover these linguistic curiosities.

On Being an iOS Developer

Becoming an iOS developer requires mastering Swift, Xcode, and Apple’s ecosystem. This post outlines key skills, from UI frameworks to app architecture, helping developers build performant, user-friendly applications for iPhones, iPads, and beyond.

Code it, and they will come… or will they?

Building a great product doesn’t guarantee users. This post explores why the “build it, and they will come” mindset fails, highlighting the importance of market research, validation, and strategic planning for success.

Solving the Zebra Puzzle with Boolean Algebra

The Zebra Puzzle, often called Einstein’s riddle, challenges solvers to determine who drinks water and owns the zebra using clues. This post demonstrates how to apply Boolean algebra and truth tables to systematically deduce the solution, showcasing the power of logical reasoning.