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
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