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fix: introduce IOResult

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Signed-off-by: Dr. Carsten Leue <carsten.leue@de.ibm.com>
This commit is contained in:
Dr. Carsten Leue
2025-11-10 16:26:52 +01:00
parent 8d92df83ad
commit 2db7e83651
75 changed files with 5100 additions and 1569 deletions
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22
v2/samples/mostly-adequate/chapter11_transformagain_test.go
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@@ -20,31 +20,31 @@ import (
"regexp"
A "github.com/IBM/fp-go/v2/array"
E "github.com/IBM/fp-go/v2/either"
F "github.com/IBM/fp-go/v2/function"
IOE "github.com/IBM/fp-go/v2/ioeither"
"github.com/IBM/fp-go/v2/ioresult"
R "github.com/IBM/fp-go/v2/result"
S "github.com/IBM/fp-go/v2/string"
)
func findUserByID(id int) IOEither[Chapter08User] {
func findUserByID(id int) IOResult[Chapter08User] {
switch id {
case 1:
return IOE.Of[error](albert08)
return ioresult.Of(albert08)
case 2:
return IOE.Of[error](gary08)
return ioresult.Of(gary08)
case 3:
return IOE.Of[error](theresa08)
return ioresult.Of(theresa08)
default:
return IOE.Left[Chapter08User](fmt.Errorf("user %d not found", id))
return ioresult.Left[Chapter08User](fmt.Errorf("user %d not found", id))
}
}
func Example_solution11A() {
// eitherToMaybe :: Either b a -> Maybe a
eitherToMaybe := E.ToOption[error, string]
eitherToMaybe := R.ToOption[string]
fmt.Println(eitherToMaybe(E.Of[error]("one eyed willy")))
fmt.Println(eitherToMaybe(E.Left[string](fmt.Errorf("some error"))))
fmt.Println(eitherToMaybe(R.Of("one eyed willy")))
fmt.Println(eitherToMaybe(R.Left[string](fmt.Errorf("some error"))))
// Output:
// Some[string](one eyed willy)
@@ -54,7 +54,7 @@ func Example_solution11A() {
func Example_solution11B() {
findByNameID := F.Flow2(
findUserByID,
IOE.Map[error](Chapter08User.getName),
ioresult.Map(Chapter08User.getName),
)
fmt.Println(findByNameID(1)())