feat: a new userData API `Remove` (#1117)

* feat:userData new api "delete"

* ctx api `remove`

* rename

* modify

1 files changed, 21 insertions, 0 deletions

diff --git a/userdata.go b/userdata.go
index 8d2eff9..9a7c988 100644
--- a/userdata.go
+++ b/userdata.go
@@ -21,6 +21,7 @@ func (d *userData) Set(key string, value interface{}) {
 			return
 		}
 	}
+
 	if value == nil {
 		return
 	}
@@ -72,3 +73,23 @@ func (d *userData) Reset() {
 	}
 	*d = (*d)[:0]
 }
+
+func (d *userData) Remove(key string) {
+	args := *d
+	n := len(args)
+	for i := 0; i < n; i++ {
+		kv := &args[i]
+		if string(kv.key) == key {
+			n--
+			args[i] = args[n]
+			args[n].value = nil
+			args = args[:n]
+			*d = args
+			return
+		}
+	}
+}
+
+func (d *userData) RemoveBytes(key []byte) {
+	d.Remove(b2s(key))
+}