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>
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Rredianthus <redopam@pm.me>
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AArthur Carcano <arthur.carcano@ocamlpro.com>
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PPierre Chambart <pierre.chambart@ocamlpro.com>
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JJosé Fragoso Santos <jose.fragoso@tecnico.ulisboa.pt>
Maintainers
Sources
md5=2ec822c82786736b275c31e850f7d292
sha512=335a1595b0652ca0d5aa50177e47a66467935d586433ad26329d6fa7d9ff6fd3eda51d630c2002278eb6565e8de83e0750b000c0a0f5b453b7ed11ffca3519a2
doc/smtml.prelude/Smtml_prelude/Option/index.html
Module Smtml_prelude.OptionSource
include module type of struct include Prelude.Option end
include module type of struct include Option end
Options
The type for option values. Either None or a value Some v.
none is None.
some v is Some v.
value o ~default is v if o is Some v and default otherwise.
bind o f is f v if o is Some v and None if o is None.
join oo is Some v if oo is Some (Some v) and None otherwise.
map f o is None if o is None and Some (f v) if o is Some v.
fold ~none ~some o is none if o is None and some v if o is Some v.
iter f o is f v if o is Some v and () otherwise.
Predicates and comparisons
is_none o is true if and only if o is None.
is_some o is true if and only if o is Some o.
equal eq o0 o1 is true if and only if o0 and o1 are both None or if they are Some v0 and Some v1 and eq v0 v1 is true.
compare cmp o0 o1 is a total order on options using cmp to compare values wrapped by Some _. None is smaller than Some _ values.
Converting
to_result ~none o is Ok v if o is Some v and Error none otherwise.
to_list o is [] if o is None and [v] if o is Some v.