2 posts tagged with "functional-programming"

I used to think Java Streams were confusing magic. I avoided them for months, writing nested for loops like it was 2005. Then I saw a senior developer calculate cart totals in ONE line of code that took me 15 lines. I felt like a caveman discovering fire. 🔥 Let me teach you the 5 patterns that cover 90% of real-world Stream usage—no PhD required.

"What do .stream(), .map(), and .collect() actually do?" These three methods form a powerful pipeline for transforming collections in Java. Instead of writing loops to transform each element, you create a stream, transform elements, and collect results. Let's break down exactly what happens at each step.