nit: use builder.WriteByte

KatieLG · Sep 22, 2024 · 04d78c6 · 04d78c6
1 parent f36e3ce
commit 04d78c6
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hole/card-number-validation.go b/hole/card-number-validation.go
@@ -65,7 +65,7 @@ func cardNumberValidation() []Run {
 
 		if c.valid {
 			if answer.Len() > 0 {
-				answer.WriteString("\n")
+				answer.WriteByte('\n')
 			}
 			answer.WriteString(c.arg)
 		}