more FindFirst variants

find.go

@@ -1,5 +1,7 @@
 package channel
 
+import "context"
+
 func FindFirst[T any](source <-chan T) *T {
 	for v := range source {
 		return &v
@@ -7,6 +9,14 @@ func FindFirst[T any](source <-chan T) *T {
 	return nil
 }
 
+func FindFirstAndCancel[T any](cancel context.CancelFunc, source <-chan T) *T {
+	for v := range source {
+		cancel()
+		return &v
+	}
+	return nil
+}
+
 func FindFirstAndFlush[T any](source <-chan T) *T {
 	for v := range source {
 		go Flush(source)
@@ -15,6 +25,15 @@ func FindFirstAndFlush[T any](source <-chan T) *T {
 	return nil
 }
 
+func FindFirstAndCancelFlush[T any](cancel context.CancelFunc, source <-chan T) *T {
+	for v := range source {
+		cancel()
+		go Flush(source)
+		return &v
+	}
+	return nil
+}
+
 func FindLast[T any](source <-chan T) *T {
 	var last *T = new(T)
 	found := false