programs written to the Go 1 specification will continue to compile and run
correctly, unchanged, over the lifetime of that specification.
More generally, as adjustments are made and features added to the language,
the compatibility guarantee ensures that a Go program that works with a
specific Go language version will continue to work with any subsequent version.
</p>

<p>

		//  1) Using unsafe you can arrange partial overlaps.
		//  2) Since Go 1.17, you can use a cast from a slice to a ptr-to-array.
		//     https://go.dev/ref/spec#Conversions_from_slice_to_array_pointer
		//     This feature can be used to construct partial overlaps of array types.
		//       var a [3]int
		//       p := (*[2]int)(a[:])
		//       q := (*[2]int)(a[1:])
		//       *p = *q