You might want to start with: <a href="http:&#x2F;&#x2F;blog.ezyang.com&#x2F;2010&#x2F;10&#x2F;ocaml-for-haskellers&#x2F;" rel="nofollow">http:&#x2F;&#x2F;blog.ezyang.com&#x2F;2010&#x2F;10&#x2F;ocaml-for-haskellers&#x2F;</a> and explore the languages for what they are yourself.<p>I haven&#x27;t tried Haskell apart from the very basic stuff, but if you have tried your hand at it for too long, and aren&#x27;t able to make any headway, then you might as well invest time in learning OCaml&#x2F;F# or Erlang or Idris or Rust or Elm instead. I hear Rust and Elm are pretty good too.<p>OCaml doesn&#x27;t do mutli-core, I think [0], whilst Haskell has great support parallelism, concurrency [1]. Erlang, of course, is absolutely amazing at that too.<p>I primarily learn languages to expand my understanding of various programming constructs. It feels liberating to know that things are much easier in certain languages due to presence of certain constructs absent in other languages. For instance, OCaml is insanely good for compiler design and&#x2F;or static analysis primarily due to &#x27;variants&#x27; and the type system; Go (channels)&#x2F;Erlang (actor-based programming, hot-plug code)&#x2F;JVM-based languages (Clojure&#x2F;Scala et al running on vastly optimized vm) for building massively concurrent systems; Ruby for being expressive, powerful, and simply awesome; JavaScript for... well... getting a taste of event-driven programming.<p>The challenges faced when using some of these languages are fascinating and at some point, it all comes together, as you try searching for a language in another language (like trying to mimic functional&#x2F;reactive paradigms in Java 7 or below when faced with problems in handling &quot;streaming data&quot; for example).<p>In my personal experience, I have found strongly-typed languages to be easier to master and adopt in production than dynamically-typed languages.<p>----<p>[0] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9582980" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9582980</a><p>[1] <a href="https:&#x2F;&#x2F;ghcmutterings.wordpress.com&#x2F;2009&#x2F;10&#x2F;06&#x2F;parallelism-concurrency&#x2F;" rel="nofollow">https:&#x2F;&#x2F;ghcmutterings.wordpress.com&#x2F;2009&#x2F;10&#x2F;06&#x2F;parallelism-c...</a>