Re: [Haskell-cafe] How to handle recoverable errors in multi-step computation?

hello Hon, you could: Q1) return Either Partial Result from each step that may partially fail Q2) Partial type may include (tag, level) where tag is generated by the function where it first happened, level is incremented in each caller function (where the "error" bubbled up/propagated). Log fails in every steps. Tags would let you link errors, levels would hint at the order in which the error bubbled up. this may not be the best practice. Just a possibility.