package httpresponse import ( "log" "net/http" ) func goodHTTPGet() { res, err := http.Get("http://foo.com") if err != nil { log.Fatal(err) } defer res.Body.Close() } func badHTTPGet() { res, err := http.Get("http://foo.com") defer res.Body.Close() // ERROR "using res before checking for errors" if err != nil { log.Fatal(err) } }