When do you choose to type a given function's return type as Seq vs Iterable vs Traversable (or alternatively even deeper within Seq's hierarchy)?
How do you make that decision? We have a lot of code that returns Seqs by default (usually starting from results of a DB query and successive transformations). I tend to want to make the return types Traversable by default and Seq when specifically expecting a given order. But I don't have a strong justification for doing so.
I am perfectly familiar with the definition of each trait, so please don't answer with defining the terms.
