Though the above is not allowed, you can restructure your code to wrap your
struct as array in another struct and have area() paas a index to the
underlying struct. Something like this (landSpaceArr wraps landSpace
struct) -
type landSpace struct{
side int
}
type landSpaceArr struct {
lS []landSpace
}
func (s *landSpaceArr) area(i int) int {
return s.lS[i].side * s.lS[i].side
}
type Shapes interface {
area(int) int
}
func main() {
v := make([]landSpace, 1)
v[0].side =50
a := &landSpaceArr{lS: v}
processShapes(a, 0)
}
func processShapes(shapes Shapes, i int) {
println(shapes.area(i))
}
~
On Thursday, April 19, 2018 at 10:29:12 AM UTC+5:30, Sakthi Natesan wrote:
>
> Usescases that I came across doesn't involve []interface{}.
>
> My usecases will be similar to this sample code
> <https://play.golang.org/p/LezKzpiMndl>
>
> type landSpace struct {
> //consider that landSpace implements all functions from both Shape and
> property interfaces
> ...
> }
> type Shape interface {
> ...
> }
>
>
> type property interface {
>
> ...
> }
>
>
> var a []*landSpace
>
> func processShapes(shapes []Shape) {
> //....
> }
>
> func evaluateProperties(properties []Property) {
> //....
> }
>
>
>
> If I want to pass the variable 'a' to both the functions, then I have to
> write two functions to clone and typeAssert to respective interfaces.
>
>
> On Wednesday, 18 April 2018 19:53:33 UTC+5:30, Jan Mercl wrote:
>>
>> On Wed, Apr 18, 2018 at 4:13 PM <nsak...@gmail.com> wrote:
>>
>> When possible, avoid using '[]interface{}' and use just 'interface{}'
>> instead: https://play.golang.org/p/oPtPoGChkMZ.
>>
>>
>> --
>>
>> -j
>>
>
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