* Christian Maurer <[email protected]> [201210 07:37]:
>
> // Proof: Set n to a number >= 39 in the following program:
>
> func main() {
> const (
> b = byte(0xc0)
> n = 9
> )
> s := []string{string(b)}
> for i := 0; i < n; i++ {
> s = append(s, []string{""}...)
> }
> for i := 0; i < n; i++ {
> for j := 0; j < len(s[i]); j++ {
> s[i+1] += string(s[i][j])
> }
> }
> println(len(s[n]), len(s[n]) == 1<<(n+1))
> }
Did you try adding
fmt.Printf("s[0] = %q len(s[0]) = %d\n", s[0], len(s[0]))
after the initial assignment to s? Strings are treated as UTF-8, and
string(byte(0xc0)) converts the rune (Unicode code point) '\u00c0' to
its UTF-8 representation as a string "\xc3\x80".
See https://golang.org/ref/spec#Conversions and scroll down to
"Conversions to and from a string type".
...Marvin
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