package main import (     "text/template"     "time"     "os" ) type User struct {     Username, Password string     RegTime time.Time } func ShowTime(t time.Time, format string) string {     return t.Format(format) } func main() {     u := User{"dotcoo", "dotcoopwd", time.Now()}     t, err := template.New("text").Funcs(template.FuncMap{"showtime":ShowTime}).         Parse(`<p>{{.Username}}|{{.Password}}|{{.RegTime.Format "2006-01-02 15:04:05"}}</p> <p>{{.Username}}|{{.Password}}|{{showtime .RegTime "2006-01-02 15:04:05"}}</p> `)     if err != nil {         panic(err)     }     t.Execute(os.Stdout, u) }