Исходники и презентации

lessons/errors/signal_errors/main.go

@@ -0,0 +1,18 @@
+package main
+
+import "database/sql"
+
+type Database interface {
+	Query(string) (string, error)
+}
+
+func RunQueyry(db Database, query string) {
+	_, err := db.Query(query)
+	if err == sql.ErrNoRows {
+		// not found
+	} else if err != nil {
+		// error from database
+	} else {
+		// ok
+	}
+}