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CCError.map2 could map to a new error type

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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.
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Hezekiah M. Carty 2014-11-18 11:09:54 -05:00
parent a2617fd83c
commit fbf24ea7c7
1 changed files with 1 additions and 1 deletions
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core/CCError.mli
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@ -62,7 +62,7 @@ val map_err : ('err1 -> 'err2) -> ('a, 'err1) t -> ('a, 'err2) t
(** Map on error.
@since 0.5 *)
val map2 : ('a -> 'b) -> ('err -> 'err) -> ('a, 'err) t -> ('b, 'err) t
val map2 : ('a -> 'b) -> ('err1 -> 'err2) -> ('a, 'err1) t -> ('b, 'err2) t
(** Same as {!map}, but also with a function that can transform
the error message in case of failure *)