Commit | Line | Data |
---|---|---|
6731749b SK |
1 | -module(hope_result). |
2 | ||
2a40de4f | 3 | |
3b156801 SK |
4 | -export_type( |
5 | [ t/2 | |
6 | ]). | |
6731749b | 7 | |
3b156801 SK |
8 | -export( |
9 | [ pipe/2 | |
10 | ]). | |
6731749b SK |
11 | |
12 | ||
3b156801 SK |
13 | -type t(A, B) :: |
14 | {ok, A} | |
15 | | {error, B} | |
16 | . | |
6731749b SK |
17 | |
18 | ||
19 | pipe([] , X) -> X; | |
20 | pipe([F|Fs], X) -> | |
21 | case F(X) | |
22 | of {error, _}=E -> E | |
23 | ; {ok, Y} -> pipe(Fs, Y) | |
24 | end. |