Question: how to make a generic function which takes a type T where the
constraint is "*T satisfies a given interface"?
func (m *MyMap[KT, VT]) init() {
m.data = make(map[KT]VT)
}
type Initializer interface {
init()
}
func mynew[T Initializer]() *T {
t := new(T)
t.init()
return t
}
/* or:
func mynew[T Initializer]() *T {
var t T
t.init()
return &t
}
*/
func main() {
m := mynew[MyMap[string, int]]()
}
gives:
type checking failed for main prog.go2:34:13: MyMap[string, int] does not
satisfy Initializer: wrong method signature
got func (*MyMap[KT, VT]).init()
want func (Initializer).init()
Full code: https://go2goplay.golang.org/p/INcenfcInSl
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
To view this discussion on the web visit
https://groups.google.com/d/msgid/golang-nuts/13dcb9b5-da98-49b9-abf7-05c95b1d4ebdn%40googlegroups.com.
