As a programmer we don’t really like to deal with errors. We like to focus on the happy path – the one that provides value – and deal with the errors later because … well, we have to do it!
However dealing with failures is crucial if we don’t want our program to stop on the first error it encounters.
But still we don’t want to mix the “clean” code of the happy path with the “dirty” error handling code. And in fact this is what exceptions were suppose to bring: A clean happy path in a
try statement and the error handling code in a
catch statement. You know everything clean and separated.
In Scala we have a rich type-system which gives us more options to handle errors. But before we start let’s be clear by what we mean by errors. Continue reading “Dealing with errors”