add Prepend() for iovec

2016-03-09 01:26:25 +08:00 · 2016-03-09 01:26:25 +08:00 · 7a1c3ed2cc
commit 7a1c3ed2cc
parent a623b75470
1 changed files with 5 additions and 0 deletions
--- a/vecio.go
+++ b/vecio.go
@ -17,6 +17,11 @@ type iovec struct {
 	idx int
 }

+func (self *iovec) Prepend(b []byte) {
+	self.data = append([][]byte{b}, self.data...)
+	self.Len += len(b)
+}
+
 func (self *iovec) Append(b []byte) {
 	self.data = append(self.data, b)
 	self.Len += len(b)