Passing array of structs to a function in Go -

i have object parsed xml file. has struct type this

type report struct {     items []item `xml:......`     anotheritems []anotheritem `xml:......` } type item struct {     name string } type anotheritem struct {     name string } func (item *item) foo() bool {     //some code here } func (anotheritem *anotheritem) foo() bool {     //another code here } 

for each item have smth this:

func main(){     //some funcs called report object     dosmth(report.items)     dosmth(report.anotheritems) } func dosmth(items ????){     _, item : range items {         item.foo()     } } 

since have different items same function want have 1 dosmth can't dosmth(items []item) , question - should write instead of "????" working? way made pass report.items dosmth()

func dosmth(items interface{}) 

but throws me error "cannot range on items (type interface {})" , if instead of iteration put smth

func dosmth(items interface{}){     fmt.println(items) } 

program print list of items

replace ???? []item: go playground. same how variable report.items defined in struct report.

ok, yes change question. thing thought of needed create interface such itemer , have []itemer in function definition of dosmth:

type itemer interface {     foo() bool }   func dosmth(items []itemer) {     ... } 

unfortunately this not seem possible. tried other permutations including using interface{}, []interface{} variadic functions , couldn't work.

after doing research turns out go not convert type of slices. if each element of slice instance of interface such itemer or interface{} still won't it. i not re-find source apparently due fact new slice have created , each element have type cast individually old slice new slice: https://stackoverflow.com/a/7975763/2325784.

to me suggests function such dosmth not possible.

the thing suggest restructure code. if willing post more information foo , dosmth can try that.