Documentation: func String() description in "Effective Go" is wrong #1796
Description
by christopher.helck:
Document "Effective Go" under the Printing section shows how to write String()
function for object T:
func (t *T) String() string {
return fmt.Sprintf("%d/%g/%q", t.a, t.b, t.c)
}
fmt.Printf("%v\n", t)
This is incorrect, the function should not take a pointer, instead it should be written
as:
func (t T) String() string {
return fmt.Sprintf("%d/%g/%q", t.a, t.b, t.c)
}
fmt.Printf("%v\n", t)
The tutorial has the same issue, but the specification is correct.
I checked to see how String() method is written in packages. See
http://golang.org/src/pkg/image/geom.go?s=1791:1825#L69 for an example.
As a beginner I found this hard to debug.