Stacktrace and error monads in Clojure

Question

I am not sure whether error handling with monads is considered as best practice for Clojure but it seems quite popular (however, I still see exceptions to be used also a lot). Monads seem more functional approach to error handling. However, I am missing the stacktrace when using error monads. Is there a way how to get stacktrace when using monads? Or what is the alternative in here?

Answer 1

As muhuk says, you'd use a monad to avoid getting a stacktrace.

An article I discovered when answering another SO recently that relates to the one you linked is http://overwatering.org/blog/2013/12/clojures-thread-for-monads

It builds a m-> threading monad, and gives example of using it to produce a fail-> monad based on the work in the error monads article. It allows you to effectively return different error types during execution.

Answer 2

Stack traces can be generated by saying (Exception. "msg") anywhere. I have been working on Promenade (see documentation) that can combine exceptions and errors-as-values. You should take a look if that sounds like a potential solution.