Cleanup code a bit.

commands_test.go

@@ -1264,14 +1264,19 @@ var _ = Describe("Commands", func() {
 		})
 
 		It("should HVals", func() {
-			hSet := client.HSet("hash", "key1", "hello1")
+			err := client.HSet("hash", "key1", "hello1").Err()
-			Expect(hSet.Err()).NotTo(HaveOccurred())
+			Expect(err).NotTo(HaveOccurred())
-			hSet = client.HSet("hash", "key2", "hello2")
+			err = client.HSet("hash", "key2", "hello2").Err()
-			Expect(hSet.Err()).NotTo(HaveOccurred())
+			Expect(err).NotTo(HaveOccurred())
 
-			hVals := client.HVals("hash")
+			v, err := client.HVals("hash").Result()
-			Expect(hVals.Err()).NotTo(HaveOccurred())
+			Expect(err).NotTo(HaveOccurred())
-			Expect(hVals.Val()).To(Equal([]string{"hello1", "hello2"}))
+			Expect(v).To(Equal([]string{"hello1", "hello2"}))
+
+			var slice []string
+			err = client.HVals("hash").ScanSlice(&slice)
+			Expect(err).NotTo(HaveOccurred())
+			Expect(slice).To(Equal([]string{"hello1", "hello2"}))
 		})
 
 	})

internal/proto/scan.go

@@ -107,34 +107,25 @@ func Scan(b []byte, v interface{}) error {
 	}
 }
 
-// Scan a string slice into a custom container
+func ScanSlice(data []string, slice interface{}) error {
-// Example:
+	v := reflect.ValueOf(slice)
-// var container []YourStruct; ScanSlice([]string{""},&container)
+	if !v.IsValid() {
-// var container []*YourStruct; ScanSlice([]string{""},&container)
-func ScanSlice(sSlice []string, container interface{}) error {
-	val := reflect.ValueOf(container)
-
-	if !val.IsValid() {
 		return fmt.Errorf("redis: ScanSlice(nil)")
 	}
-
+	if v.Kind() != reflect.Ptr {
-	// Check the if the container is pointer
+		return fmt.Errorf("redis: ScanSlice(non-pointer %T)", slice)
-	if val.Kind() != reflect.Ptr {
+	}
-		return fmt.Errorf("redis: ScanSlice(non-pointer %T)", container)
+	v = v.Elem()
+	if v.Kind() != reflect.Slice {
+		return fmt.Errorf("redis: ScanSlice(non-slice %T)", slice)
 	}
 
-	// slice of the Ptr
+	for i, s := range data {
-	val = val.Elem()
+		elem := internal.SliceNextElem(v)
-	// if the container is slice
-	if val.Kind() != reflect.Slice {
-		return fmt.Errorf("redis: Wrong object type `%T` for ScanSlice(), need *[]*Type or *[]Type", container)
-	}
-
-	for index, s := range sSlice {
-		elem := internal.SliceNextElem(val)
 		if err := Scan([]byte(s), elem.Addr().Interface()); err != nil {
-			return fmt.Errorf("redis: ScanSlice failed at index of %d => %s, %s", index, s, err.Error())
+			return fmt.Errorf("redis: ScanSlice(index=%d value=%q) failed: %s", i, s, err)
 		}
 	}
+
 	return nil
 }

internal/proto/scan_test.go

@@ -12,59 +12,37 @@ type testScanSliceStruct struct {
 	Name string
 }
 
-func (this *testScanSliceStruct) MarshalBinary() (data []byte, err error) {
+func (s *testScanSliceStruct) MarshalBinary() ([]byte, error) {
-	return json.Marshal(data)
+	return json.Marshal(s)
 }
 
-func (this *testScanSliceStruct) UnmarshalBinary(data []byte) error {
+func (s *testScanSliceStruct) UnmarshalBinary(b []byte) error {
-	return json.Unmarshal(data, this)
+	return json.Unmarshal(b, s)
 }
 
 var _ = Describe("ScanSlice", func() {
+	data := []string{
+		`{"ID":-1,"Name":"Back Yu"}`,
+		`{"ID":1,"Name":"szyhf"}`,
+	}
 
-	// Base string array for test.
+	It("[]testScanSliceStruct", func() {
-	strAry := []string{`{"ID":-1,"Name":"Back Yu"}`, `{"ID":1,"Name":"szyhf"}`}
+		var slice []testScanSliceStruct
-	// Validate json bytes of container if ScanSlice success
+		err := ScanSlice(data, &slice)
-	equalJson := Equal([]byte(`[{"ID":-1,"Name":"Back Yu"},{"ID":1,"Name":"szyhf"}]`))
-
-	It("var testContainer []testScanSliceStruct", func() {
-		var testContainer []testScanSliceStruct
-		err := ScanSlice(strAry, &testContainer)
 		Expect(err).NotTo(HaveOccurred())
-
+		Expect(slice).To(Equal([]testScanSliceStruct{
-		jsonBytes, err := json.Marshal(testContainer)
+			{-1, "Back Yu"},
-		Expect(err).NotTo(HaveOccurred())
+			{1, "szyhf"},
-		Expect(jsonBytes).Should(equalJson)
+		}))
-	})
-
-	It("testContainer := new([]testScanSliceStruct)", func() {
-		testContainer := new([]testScanSliceStruct)
-		err := ScanSlice(strAry, testContainer)
-		Expect(err).NotTo(HaveOccurred())
-
-		jsonBytes, err := json.Marshal(testContainer)
-		Expect(err).NotTo(HaveOccurred())
-		Expect(jsonBytes).Should(equalJson)
 	})
 
 	It("var testContainer []*testScanSliceStruct", func() {
-		var testContainer []*testScanSliceStruct
+		var slice []*testScanSliceStruct
-		err := ScanSlice(strAry, &testContainer)
+		err := ScanSlice(data, &slice)
 		Expect(err).NotTo(HaveOccurred())
-
+		Expect(slice).To(Equal([]*testScanSliceStruct{
-		jsonBytes, err := json.Marshal(testContainer)
+			{-1, "Back Yu"},
-		Expect(err).NotTo(HaveOccurred())
+			{1, "szyhf"},
-		Expect(jsonBytes).Should(equalJson)
+		}))
 	})
-
-	It("testContainer := new([]*testScanSliceStruct)", func() {
-		testContainer := new([]*testScanSliceStruct)
-		err := ScanSlice(strAry, testContainer)
-		Expect(err).NotTo(HaveOccurred())
-
-		jsonBytes, err := json.Marshal(testContainer)
-		Expect(err).NotTo(HaveOccurred())
-		Expect(jsonBytes).Should(equalJson)
-	})
-
 })