[purple_ducks]

> How do you manage errors?

It becomes unwieldy like every other language.

> What happens if Questionnaire.xlsx or Sheet1 doesn't exist ?

Runtime exception.

I've seen too much Clojure code (and this goes for every language where error handling is optional - Hi Javascript!) just skip error handling and focus on "happy path".

And as demonised as Java's checked exceptions are, they at least forced error handling to be thought of.

[beders]

Or you could use: https://github.com/adambard/failjure

Ya'll underestimate the power of a programming language to create a programming language. Just replace the arrow with `ok->>`