#1 best-selling book in Java and Functional Programming

I’m glad to report that my book, Learn Functional Programming Without Fear, is the #1 book in both the Java and Functional Programming categories, according to Amazon.com’s book-rating system. (And that doesn’t include many more PDF sales on Gumroad.com!) Thank you all, and I hope the book is helpful!

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#1 best-selling book in Java and Functional Programming