What does nil mean in golang?

Question

There are many cases using nil in golang. For example:

func (u *URL) Parse(ref string) (*URL, error) {
    refurl, err := Parse(ref)
    if          


        

Answer 1

nil is also a value but only difference is- it is empty.

In Javascript for the un-initialized variable will be undefined. In the same way Golang has nil as default value for all the un-initalized data types.