Over the last 10 days, I've been reading "Programming in Scala" and writing some Scala code.
As you can see in my GitHub Scala playground, I am starting to really like this language - it is as fast as OCaml (thanks to JVM's HotSpot technology), protects me from my typos (and bugs!) with its strong and static type system, and best of all: enterprise-wise, it doesn't live in a remote "island" (like Haskell and OCaml) ... because it has the huge ecosystem of the JVM.
My only problem so far:
Even though I've figured out how to develop my Scala code under VIM with sbt-quickfix, or under Emacs with Ensime (and thus have autocompletion and error navigation), I have so far failed to find a way to debug my code, with the same ease that I do for Python:
bash$ python -m pdb ./someCode.py
ensime has a debugging mode, which I somehow missed. Paired with Emacs/evil, I've spent the last couple of days inside Emacs and Scala - and it all works perfectly... autocompletion, spawning sbt in a buffer when I want to run, and debugging.
My only remaining problem is about working with Ensime from inside
screen-ed sessions, which is my usual modus operandi (over SSH connections). The markers of Ensime debugger's current line and breakpoint set are placed on the left fringe - which works fine in graphics mode Emacs, but isn't visible in text-mode Emacs. I've opened a ticket and the guys there apparently have a plan for a solution.