c-cube/ocaml-containers — pull request #11 by hcarty (2014-11-18 16:10:01+00:00)
Title: CCError.map2 could map to a new error type

With the recent change from `_ CCError.t` to `(_, _) CCError.t` it's reasonable to allow `map2` to take an argument transforming the error to a new type.