code: func Render(source string, ctx interface{}) (string, error) {
  	// parse template
  	tpl, err := Parse(source)
  	if err != nil {
  		return "", err
  	}
  
  	// renders template
  	str, err := tpl.Exec(ctx)
  	if err != nil {
  		return "", err
  	}
  
  	return str, nil
  }
docs: // Render parses a template and evaluates it with given context
  //
  // Note that this function call is not optimal as your template is parsed everytime you call it. You should use Parse() function instead.