Go Standard Library Cookbook

How to do it...

1. Open the console and create the folder chapter08/recipe02.
2. Navigate to the directory.
3. Create the verify.go file with the following content:

        package main         import (          "context"          "database/sql"          "fmt"          "time"          _ "github.com/lib/pq"        )        func main() {          connStr := "postgres://postgres:postgres@                      localhost:5432/example?sslmode=disable"          db, err := sql.Open("postgres", connStr)          if err != nil {            panic(err)          }          defer db.Close()          err = db.Ping()          if err != nil {            panic(err)          }          fmt.Println("Ping OK.")          ctx, _ := context.WithTimeout(context.Background(),                                        time.Nanosecond)          err = db.PingContext(ctx)          if err != nil {            fmt.Println("Error: " + err.Error())          }          // Verify the connection is          conn, err := db.Conn(context.Background())          if err != nil {            panic(err)          } defer ...