From 9e62bab91e2cca90138c161262daf9073fea255f Mon Sep 17 00:00:00 2001
From: milarin <milaring@proton.me>
Date: Sat, 25 Mar 2023 11:52:57 +0100
Subject: [PATCH] WriteIntoWriter handles error values

---
 chan_io.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/chan_io.go b/chan_io.go
index 3c9d41c..c3e048e 100644
--- a/chan_io.go
+++ b/chan_io.go
@@ -23,6 +23,10 @@ func WriteIntoDelayed[T any](ch chan<- T, delay time.Duration, values ...T) {
 func WriteIntoWriter[T any](ch <-chan T, writers ...io.Writer) {
 	w := io.MultiWriter(writers...)
 	EachSuccessive(ch, func(value T) {
+		if err, ok := any(value).(error); ok {
+			fmt.Fprintln(w, err.Error())
+			return
+		}
 		fmt.Fprintln(w, value)
 	})
 }