common: Fingerprint comment

2017-09-20 02:48:04 -04:00 · 2017-09-20 02:48:04 -04:00 · 9a2438e0dc
parent 4e955434aa
commit 9a2438e0dc
1 changed files with 3 additions and 0 deletions
--- a/common/byteslice.go
+++ b/common/byteslice.go
@ -4,6 +4,9 @@ import (
 	"bytes"
 )

+// Fingerprint returns the first 6 bytes of a byte slice.
+// If the slice is less than 6 bytes, the fingerprint
+// contains trailing zeroes.
 func Fingerprint(slice []byte) []byte {
 	fingerprint := make([]byte, 6)
 	copy(fingerprint, slice)