Stdle #43 · interfaces · 2026-07-19
What does this Go snippet output?
A past puzzle — fully playable. 4 attempts, hints on wrong guesses.
package main import "fmt" type Greeter interface{ Hi() string }type En struct{} func (En) Hi() string { return "hello" } func main() { var g Greeter = En{} var i interface{} = g g2, ok := i.(Greeter) fmt.Println(ok, g2.Hi())}Interfaces