Got an email that A monad tutorial for Clojure programmers (part 1) was corrected with the latest changes around clojure.algo.monads. I almost immediately began reading it. It’s been a while since I read it, and recalled how tough it was to understand what monads are and how they work in Clojure. It was at the [...]

Wednesday was great! It was the day at the 33rd degree conference when I ran my presentation and spent another hour presenting Clojure by code samples. There were three people who needed more since I merely scratched the surface of why people should consider Clojure as the language of choice. I could barely present 2 [...]

Functional programming is for me about function composition and no mutable state in-between if possible. I knew I could do better than Drawing a winner in Clojure (in an almost purely functional approach) and the comments showed how far I was from “purely functional approach” (I should’ve known it’s not a good idea to use [...]

There is a need in Warszawa Java User Group to have a way to draw a winner of a free license for a product from JetBrains amongst the attendees of a meeting. We couldn’t figure out whether the draw should be at the beginning of a meeting or its end. Some argued it doesn’t really [...]

I should rather refrain from announcing the blog entry Thinking functional programming with Map and Fold in your everyday Java as it wasn’t at all useful from the point of a person who’s aiming at learning functional programming, however, on the contrary, it did a great job of encouraging me to try out Clojure’s Java [...]

I’ve already described the issue of Can’t dynamically bind non-dynamic var in Can’t dynamically bind non-dynamic var in Clojure 1.3. While learning about defs, symbols and vars, I again ran into this issue. I can see now that I made a mistake using Clojure 1.3 not 1.3.0-alpha6 in the title of the past blog entry [...]

Remember Getting my head around let-over-lambda, functions in let, and let with bindings in Clojure in which I mentioned the chapter Closures in Let Over Lambda by Doug Hoyte? I spent an entire day having imagined I could write the parser in Clojure and, guess what, I ultimately did it! How would you feel about [...]