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Add hope_option:of_result/1
[hope.git]
/
src
/
hope_option.erl
diff --git
a/src/hope_option.erl
b/src/hope_option.erl
index
c461d04
..
ab6eab7
100644
(file)
--- a/
src/hope_option.erl
+++ b/
src/hope_option.erl
@@
-9,6
+9,8
@@
[ put/2
, get/2
, map/2
[ put/2
, get/2
, map/2
+ , iter/2
+ , of_result/1
]).
]).
@@
-35,3
+37,13
@@
get(none , Y) -> Y.
t(B).
map({some, X}, F) -> {some, F(X)};
map(none , _) -> none.
t(B).
map({some, X}, F) -> {some, F(X)};
map(none , _) -> none.
+
+-spec iter(t(A), fun((A) -> (ok))) ->
+ ok.
+iter({some, X}, F) -> ok = F(X);
+iter(none , _) -> ok.
+
+-spec of_result(hope_result:t(A, _B)) ->
+ t(A).
+of_result({ok, X}) -> {some, X};
+of_result({error, _}) -> none.
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