将Go结构转换为字符串

Question

My Code :

type Link struct {
    Href string `xml:"href,attr"`
}

var html Link = ""
func (s Entry) String() string {
  links := string(s.Link)
}

I parsed a whole XML document to get the links and text, Now I want to append all the parsed data in html variable to construct a nice view on the localhost. But s.Link can't be converted to string data type maybe because type conversion only supports basic data-types , Any Solutions ?

Live demo : http://play.golang.org/p/7HRHusXLe2

Answer 1

In your case you don't want to append the string representation of the struct Link, you just need its Href field which is already of type string.

func (s Entry) LinkString() string {
    return s.Link.Href
}

Also note that if you use a non-pointer receiver Entry, your method LinkString() will receive a copy of the struct. Which in this case is not a problem, it's just a little slower because a copy has to be made.

If your struct gets bigger, it's better to use pointer receiver: *Entry:

func (s *Entry) LinkString() string {
    return s.Link.Href
}

Also note that you don't even need a method to access the URL text because your fields (Entry.Link and Link.Href) are exported because they start with an upper-case letter, so you can simply refer to it like this:

// e is of type Entry:
url := e.Link.Href
// url is of type string