On Thursday, June 16, 2016 at 12:11:54 AM UTC-4, Tong Sun wrote:
>
> Let me explain with an example, 
>
> For goquery, most functions are of type "func (s *Selection) Xxx(selector 
> string) *Selection".
> For e.g., "Find" is:
>
> func (s *Selection 
> <https://godoc.org/github.com/PuerkitoBio/goquery#Selection>) Find(selector 
> string <https://godoc.org/builtin#string>) *Selection 
> <https://godoc.org/github.com/PuerkitoBio/goquery#Selection>
>
>
>
> What's the simplest way for me to define my own function of such type, 
> which can be used as a replacement for them. 
>
> E.g., for a code like, 
>
> post_url, _ := doc.Find(".thing").Find(".comments.may-blank").Attr("href")
>
>
>
> How to define my own function 
>
>
> func *FindUrl*() { return 
> goquery.Find(".thing").Find(".comments.may-blank").Attr("href"); }
>
> so that the above code can be simplified as:
>
>   post_url, _ := doc.*FindUrl*()
>
>
> ? Or, is it possible to define FindUrlN() as 
> "goquery.Find(".thing").Find(".comments.may-blank")", so that I can do this:
>
>   post_url, _ := doc.FindUrlN().Attr("href")
>
> ? Thanks
>
>
>
PS, If you need some code to be based on, I've prepare it here -- 
https://github.com/suntong/kuaizh/blob/master/crawler/reddit.go


PPS, Does it make any difference for other's packages or my own package? I 
mean, if I create my own module, and import that module in another program, 
is there any advantages I can take, to extend the functionality of  my own 
module from my other program, since I can control both?

Thanks




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