selector: use a string builder to avoid excessive allocation

ucan-wg · Sep 1, 2024 · 4d0a0a2 · 4d0a0a2
1 parent 431a9f0
commit 4d0a0a2
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/capability/policy/selector/selector.go b/capability/policy/selector/selector.go
@@ -15,11 +15,11 @@ import (
 type Selector []segment
 
 func (s Selector) String() string {
-	var str string
+	var res strings.Builder
 	for _, seg := range s {
-		str += seg.String()
+		res.WriteString(seg.String())
 	}
-	return str
+	return res.String()
 }
 
 var Identity = segment{".", true, false, false, nil, "", 0}