Исходники и презентации

lessons/errors/errors_defer_ignoring/main.go

@@ -0,0 +1,18 @@
+package main
+
+import "database/sql"
+
+// Need to show solution
+
+func getBalance(database *sql.DB, clientId int) (float32, error) {
+	query := "..."
+	rows, err := database.Query(query, clientId)
+	if err != nil {
+		return 0, err
+	}
+
+	defer rows.Close()
+
+	// reading...
+	return 0., nil
+}