Java Map internals: a complete guide for juniors
Table of contents Why does Map exist? What would life be without it? HashMap: the street analogy hashCode() and equals() explained Collisions: when tw…
Programming
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Why Grinding 500 LeetCode Problems is a Trap in 2026
Let me save you 400 hours of your life. You don't need to solve 500 LeetCode problems to land a great engineering job in 2026. I know. Heresy. But hea…
Big O Notation explained
Introduction Big O notation measures how fast your code runs as the number of inputs grows. It’s really important to understand the following algorith…
Signals, Effects, and the Algebra Between Them
How algebraic data types make reactive state machines explicit, exhaustive, and type-safe Reactive programming has a dirty secret: state is almost alw…