GDI.

```
proc `$`*(key: PublicKey): string =
    result = ""
    for i in 0 ..< 64:
        discard $i & " " & $key.data[i]
        var hex: string = key.data[i].toHex()
        echo hex
        result = result & hex
```

That works.

```
proc `$`*(key: PublicKey): string =
    result = ""
    for i in 0 ..< 64:
        discard $i & " " & $key.data[i]
        var hex: string = key.data[i].toHex()
        result = result & hex
```

This segfaults. I tried discard hex but that also segfaults.