Use fmt.Sprintf instead of manual string concatenation (#7)

2 files changed, 4 insertions, 4 deletions

diff --git a/cmp/path.go b/cmp/path.go
index d760d8d..5a88dbd 100644
--- a/cmp/path.go
+++ b/cmp/path.go
@@ -202,7 +202,7 @@ func (ps pathStep) String() string {
 	if s == "" || strings.ContainsAny(s, "{}\n") {
 		return "root" // Type too simple or complex to print
 	}
-	return "{" + s + "}"
+	return fmt.Sprintf("{%s}", s)
 }
 
 func (si sliceIndex) String() string    { return fmt.Sprintf("[%d]", si.key) }
diff --git a/cmp/reporter.go b/cmp/reporter.go
index 14e3d8b..1b812f5 100644
--- a/cmp/reporter.go
+++ b/cmp/reporter.go
@@ -171,7 +171,7 @@ func formatAny(v reflect.Value, conf formatConfig, visited map[uintptr]bool) str
 			s := formatAny(v.Index(i), subConf, visited)
 			ss = append(ss, s)
 		}
-		s := "{" + strings.Join(ss, ", ") + "}"
+		s := fmt.Sprintf("{%s}", strings.Join(ss, ", "))
 		if conf.printType {
 			return v.Type().String() + s
 		}
@@ -196,7 +196,7 @@ func formatAny(v reflect.Value, conf formatConfig, visited map[uintptr]bool) str
 			sv := formatAny(v.MapIndex(k), subConf, visited)
 			ss = append(ss, fmt.Sprintf("%s: %s", sk, sv))
 		}
-		s := "{" + strings.Join(ss, ", ") + "}"
+		s := fmt.Sprintf("{%s}", strings.Join(ss, ", "))
 		if conf.printType {
 			return v.Type().String() + s
 		}
@@ -215,7 +215,7 @@ func formatAny(v reflect.Value, conf formatConfig, visited map[uintptr]bool) str
 			s := formatAny(vv, subConf, visited)
 			ss = append(ss, fmt.Sprintf("%s: %s", name, s))
 		}
-		s := "{" + strings.Join(ss, ", ") + "}"
+		s := fmt.Sprintf("{%s}", strings.Join(ss, ", "))
 		if conf.printType {
 			return v.Type().String() + s
 		}