All:

I saw this example at https://play.golang.org/ in cgo.  I don't understand 
the role of the 1st :8?  I tried changing it to 0 and didn't make any 
difference?  I will appreciate any pointers.

package main
>
>
>> import (
>
> "fmt"
>
> "unsafe"
>
> )
>
>
>> func main() {
>
> var i uint64 = 0xdeedbeef01020304
>
> slice := (*[1 << 30]byte)(unsafe.Pointer(&i))[:8:8]
>
> fmt.Println(slice)
>
> }
>
>
With regards,

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