JuniorTheoryCommon

What does the program print?

package main

import "fmt"

func main() {
    var v any = 42
    s, ok := v.(string)
    fmt.Println(len(s), ok)
}

0 false

Expecting 2 true: a type assertion only checks the type stored in v; it never converts 42 into the string "42".
Expecting a panic: only the one-result form s := v.(string) panics; with , ok a failed assertion sets ok to false and s to "".

JuniorTheoryCommon

package main

import "fmt"

func main() {
    var v any = 42
    s, ok := v.(string)
    fmt.Println(len(s), ok)
}

0 false

Expecting 2 true: a type assertion only checks the type stored in v; it never converts 42 into the string "42".
Expecting a panic: only the one-result form s := v.(string) panics; with , ok a failed assertion sets ok to false and s to "".