Add a comment as suggested (#1721)

sql-machine-learning · Jan 16, 2020 · 8c6d30b · 8c6d30b
1 parent 77ff3f4
commit 8c6d30b
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/pkg/sql/codegen/attribute/attribute.go b/pkg/sql/codegen/attribute/attribute.go
@@ -167,6 +167,7 @@ func ExtractDocString(module ...string) {
 	if e != nil {
 		log.Println("ExtractDocString failed: ", e, string(output))
 	}
+	// json.Unmarshal extends the map rather than reallocate a new one, see golang.org/pkg/encoding/json/#Unmarshal
 	if e := json.Unmarshal(output, &PremadeModelParamsDocs); e != nil {
 		log.Println("ExtractDocString failed:", e, string(output))
 	}