I am struggling to cast a nested array, say of type [5][5]u8, to the corresponding nested slice type like [][]u8.

I have a function which accepts a nested slice:

fn func(arg: [][]u8) void {...}

I have a variable of nested arrays:

var a = [_][5]u8{[_]u8{1} ** 5} ** 5;

I want to pass a to func. I tried the following approaches but they do not work:

func(a[0..])
func(a[0..][0..])

How can I properly cast to nested slice from nested array?