Adds ToChannelT function (#94)

Co-authored-by: Cleiton Marques Souza <[email protected]>

Author: cleitonmarx

example_test.go

@@ -1296,7 +1296,6 @@ func ExampleQuery_Take() {
 	fmt.Printf("The top three grades are: %v", topThreeGrades)
 	// Output:
 	// The top three grades are: [98 92 85]
-
 }
 
 // The following code example demonstrates how to use TakeWhile
@@ -1354,6 +1353,22 @@ func ExampleQuery_ToChannel() {
 	// 10
 }
 
+// The following code example demonstrates how to use ToChannelT
+// to send a slice to a typed channel.
+func ExampleQuery_ToChannelT() {
+	c := make(chan string)
+
+	go Repeat("ten", 3).ToChannelT(c)
+
+	for i := range c {
+		fmt.Println(i)
+	}
+	// Output:
+	// ten
+	// ten
+	// ten
+}
+
 // The following code example demonstrates how to use ToMap to populate a map.
 func ExampleQuery_ToMap() {
 	type Product struct {

result.go

@@ -544,6 +544,22 @@ func (q Query) ToChannel(result chan<- interface{}) {
 	close(result)
 }
 
+// ToChannelT is the typed version of ToChannel.
+//
+//   - result is of type "chan TSource"
+//
+// NOTE: ToChannel has better performance than ToChannelT.
+func (q Query) ToChannelT(result interface{}) {
+	r := reflect.ValueOf(result)
+	next := q.Iterate()
+
+	for item, ok := next(); ok; item, ok = next() {
+		r.Send(reflect.ValueOf(item))
+	}
+
+	r.Close()
+}
+
 // ToMap iterates over a collection and populates result map with elements.
 // Collection elements have to be of KeyValue type to use this method. To
 // populate a map with elements of different type use ToMapBy method. ToMap

result_test.go

@@ -464,6 +464,22 @@ func TestToChannel(t *testing.T) {
 	}
 }
 
+func TestToChannelT(t *testing.T) {
+	c := make(chan string)
+	input := []string{"1", "2", "3", "4", "5"}
+
+	go From(input).ToChannelT(c)
+
+	result := []string{}
+	for value := range c {
+		result = append(result, value)
+	}
+
+	if !reflect.DeepEqual(result, input) {
+		t.Errorf("From(%v).ToChannelT()=%v expected %v", input, result, input)
+	}
+}
+
 func TestToMap(t *testing.T) {
 	input := make(map[int]bool)
 	input[1] = true