if i like Ruby a lot, is there a reason I should learn another language now, such as Lua or Erlang?

Question

if i like Ruby a lot, is there a reason I should learn another language now, such as Lua or Erlang?

Answer 1

New programming languages, much like spoken languages, can open up new perspectives. Learning new languages -- especially ones rather different from what you're used to (and Erlang will probably fit that bill) -- can teach you a lot of different things you didn't even know you didn't know about programming. So yes, I think you absolutely should, even if you just learn enough to tinker with it and get a feel for the new language.

Answer 2

Learning a functional language in particular can be extremely beneficial. Becoming familiar with the functional style of programming is a surefire step toward becoming a better programmer. Lisp (or its derivatives) in particular is a good language to study. Here's a list of past thread on SO that might offer you some insight along these lines:

1. Why do people think functional programming will catch on?
2. What’s a good Functional language to learn?
3. Benefits of learning scheme?