My goal for each year is to maximize the number of languages I use for solutions. It's a nice exercise to keep myself fluent in various language paradigms and refresh my memory on the various APIs.
For 2019, I solved or partially solved the days problems in the following languages;
C (1), Perl (2), C++ (3), Bash/Sed (4),
Racket (5,7,9,11,13,17,19), AWK (6), Emacs Lisp (8),
Scala (10), Go (12), Elixir (14), Java (16),
Clojure (22), Ruby (24)
Days solved are in parentheses. As many of the solutions built on the intcode interpreter, I continued to re-use my Racket implementation for each of those problems.
Perl (1), AWK (2,5), C (3,23.2), Ruby (4), C++ (5), Bash (6),
Clojure (7,16,18,19,20,21), Elixir (8), Scala (9), Emacs Lisp (10),
Java (11), Go (12), Javascript (13.1), Common-Lisp (13.2, 15.1),
Racket (14, 15.2, 22,23.1), Clojurescript (17)
Note that Clojure solutions for 7 and 18,19 use
core.logic, and
instaparse
respectively.