feat: add Done for easy using

jizhuozhi · Jul 31, 2024 · 9f0a570 · 9f0a570
1 parent 5cdbdad
commit 9f0a570
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Showing 2 changed files with 13 additions and 0 deletions.
diff --git a/api.go b/api.go
@@ -34,6 +34,12 @@ func Lazy[T any](f func() (T, error)) *Future[T] {
 	return &Future[T]{state: s}
 }
 
+func Done[T any](val T) *Future[T] {
+	s := &state[T]{}
+	s.set(val, nil)
+	return &Future[T]{state: s}
+}
+
 func Await[T any](f *Future[T]) (T, error) {
 	return f.Get()
 }

diff --git a/api_test.go b/api_test.go
@@ -61,6 +61,13 @@ func TestLazyConcurrency(t *testing.T) {
 	wg.Wait()
 }
 
+func TestDone(t *testing.T) {
+	f := Done(1)
+	val, err := f.Get()
+	assert.Equal(t, 1, val)
+	assert.Equal(t, nil, err)
+}
+
 func TestAwait(t *testing.T) {
 	f := Async(func() (int, error) {
 		return 1, nil