eminetto · June 26, 2025 15:26 · Jun 26, 2025
diff --git a/main.go b/main.go
@@ -0,0 +1,65 @@
+package main
+
+import "context"
+
+type Repository interface {
+	Func1() error
+	Func2() error
+}
+
+type Repo struct{}
+
+func (r *Repo) Func1() error {
+	// Implementação da lógica
+	return nil
+}
+
+func (r *Repo) Func2() error {
+	return nil
+}
+
+type UseCase interface {
+	Save(ctx context.Context, data string) error
+	Remove(ctx context.Context, id string) error
+}
+
+type Service struct {
+	Repo Repository
+}
+
+func (s *Service) Save(ctx context.Context, data string) error {
+	return nil
+}
+func (s *Service) Remove(ctx context.Context, id string) error {
+	return nil
+}
+
+func (s *Service) CalculeteSomething(ctx context.Context) (float64, error) {
+	// Implementação da lógica de cálculo
+	return 1.0, nil
+}
+
+func NewServiceReturningInterface(repo Repository) UseCase {
+	return &Service{
+		Repo: repo,
+	}
+}
+
+func NewServiceReturningStruct(repo Repository) *Service {
+	return &Service{
+		Repo: repo,
+	}
+}
+
+func main() {
+	ctx := context.Background()
+	r := &Repo{}
+	s1 := NewServiceReturningInterface(r)
+	_ = s1.Save(ctx, "data")
+	//s1 só vai ter acesso as funções da interface
+	s2 := NewServiceReturningStruct(r)
+	_ = s2.Save(ctx, "data")
+	_ = s2.Remove(ctx, "id")
+	_, _ = s2.CalculeteSomething(ctx)
+	//s2 tem acesso a todas as funções da struct
+}