package smtml
Install
dune-project
Dependency
Authors
-
JJoão Pereira <joaomhmpereira@tecnico.ulisboa.pt>
-
FFilipe Marques <filipe.s.marques@tecnico.ulisboa.pt>
-
HHichem Rami Ait El Hara <hra@ocamlpro.com>
-
LLéo Andrès <contact@ndrs.fr>
-
AArthur Carcano <arthur.carcano@ocamlpro.com>
-
PPierre Chambart <pierre.chambart@ocamlpro.com>
-
JJosé Fragoso Santos <jose.fragoso@tecnico.ulisboa.pt>
Maintainers
Sources
md5=3331d81d933a176492ff37e6e7a73e10
sha512=d0b51abea60fd83d0395a22fba32ad2cda63ffb294f7d9d1035c7cc37aa744bfd8e1ae95b07cc743ef8f29ca9ced109bb5a7805ecfda0187b24e90724ef92fc3
doc/smtml.prelude/Smtml_prelude/Result/index.html
Module Smtml_prelude.ResultSource
include module type of struct include Prelude.Result end
include module type of struct include Result end
Results
The type for result values. Either a value Ok v or an error Error e.
value r ~default is v if r is Ok v and default otherwise.
bind r f is f v if r is Ok v and r if r is Error _.
join rr is r if rr is Ok r and rr if rr is Error _.
map f r is Ok (f v) if r is Ok v and r if r is Error _.
map_error f r is Error (f e) if r is Error e and r if r is Ok _.
fold ~ok ~error r is ok v if r is Ok v and error e if r is Error e.
iter f r is f v if r is Ok v and () otherwise.
iter_error f r is f e if r is Error e and () otherwise.
Predicates and comparisons
val equal :
ok:('a -> 'a -> bool) ->
error:('e -> 'e -> bool) ->
('a, 'e) result ->
('a, 'e) result ->
boolequal ~ok ~error r0 r1 tests equality of r0 and r1 using ok and error to respectively compare values wrapped by Ok _ and Error _.
val compare :
ok:('a -> 'a -> int) ->
error:('e -> 'e -> int) ->
('a, 'e) result ->
('a, 'e) result ->
intcompare ~ok ~error r0 r1 totally orders r0 and r1 using ok and error to respectively compare values wrapped by Ok _ and Error _. Ok _ values are smaller than Error _ values.
Converting
to_option r is r as an option, mapping Ok v to Some v and Error _ to None.