Source file TableclothResult.ml
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type ('ok, 'error) t = ('ok, 'error) result
let ok value = Ok value
let error value = Error value
let fromOption ma ~error =
match ma with None -> Error error | Some right -> Result.Ok right
let from_option = fromOption
let isOk = Result.is_ok
let is_ok = isOk
let isError = Result.is_error
let is_error = isError
let both a b =
match (a, b) with
| Ok a', Ok b' ->
Ok (a', b')
| Error a', _ ->
Error a'
| _, Error b' ->
Error b'
let flatten = Result.join
let or_ a b = match a with Ok _ -> a | _ -> b
let orElse a b = match b with Ok _ -> b | _ -> a
let or_else = orElse
let and_ a b = match a with Ok _ -> b | _ -> a
let unwrap = Result.value
let unwrapLazy t ~default =
match t with Ok t' -> t' | Error _ -> Lazy.force default
let unwrapUnsafe = Result.get_ok
let unwrap_unsafe = unwrapUnsafe
let unwrapError t ~default =
match t with Ok _ -> default | Error error -> error
let unwrap_error = unwrapError
let map t ~f = Result.map f t
let map2 a b ~f =
match (a, b) with
| Ok a, Ok b ->
Ok (f a b)
| Error a, _ ->
Error a
| _, Error b ->
Error b
let mapError t ~f =
match t with Error error -> Error (f error) | Ok value -> Ok value
let map_error = mapError
let values t =
Base.List.fold_right t ~f:(map2 ~f:(fun a b -> a :: b)) ~init:(Ok [])
let combine (l : ('ok, 'error) result list) : ('ok list, 'error) result =
(TableclothList.fold_right
~f:(fun (accum : ('ok list, 'error) result) (value : ('ok, 'error) result)
: ('ok list, 'error) result ->
map2 ~f:(fun (head : 'ok) (list : 'ok list) -> head :: list) value accum
)
~initial:(Ok []) )
l
let toOption r = match r with Ok v -> Some v | Error _ -> None
let to_option = toOption
let andThen t ~f = Result.bind t f
let and_then = andThen
let attempt f =
match f () with value -> Ok value | exception error -> Error error
let tap t ~f = match t with Ok a -> f a | _ -> ()
let equal equalOk equalError a b =
match (a, b) with
| Error a', Error b' ->
equalError a' b'
| Ok a', Ok b' ->
equalOk a' b'
| _ ->
false
let compare
(compareOk : 'ok -> 'ok -> int)
(compareError : 'error -> 'error -> int)
(a : ('ok, 'error) t)
(b : ('ok, 'error) t) : int =
match (a, b) with
| Error a', Error b' ->
compareError a' b'
| Ok a', Ok b' ->
compareOk a' b'
| Error _, Ok _ ->
-1
| Ok _, Error _ ->
1
let ( |? ) t default = unwrap t ~default
let ( >>| ) t f = map t ~f
let ( >>= ) t f = andThen t ~f