1 files changed, 10 insertions, 0 deletions
diff --git a/src/bytes/bytes.go b/src/bytes/bytes.go
index 8a4409cb6b..305c85d9f4 100644
--- a/src/bytes/bytes.go
+++ b/src/bytes/bytes.go
@@ -83,6 +83,16 @@ func Contains(b, subslice []byte) bool {
 	return Index(b, subslice) != -1
 }
 
+// ContainsAny reports whether any of the UTF-8-encoded Unicode code points in chars are within b.
+func ContainsAny(b []byte, chars string) bool {
+	return IndexAny(b, chars) >= 0
+}
+
+// ContainsRune reports whether the Unicode code point r is within b.
+func ContainsRune(b []byte, r rune) bool {
+	return IndexRune(b, r) >= 0
+}
+
 // Index returns the index of the first instance of sep in s, or -1 if sep is not present in s.
 func Index(s, sep []byte) int {
 	n := len(sep)