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Stdle #111 · interfaces · 2026-09-25

What does this Go snippet output?

A past puzzle — fully playable. 4 attempts, hints on wrong guesses.

package main
 
import "fmt"
 
type myErr struct{}
 
func (myErr) Error() string { return "x" }
 
func main() {
	var e error = myErr{}
	fmt.Println(e == nil, e != nil)
}
Interfaces
4 attempts left

Answer & explanation