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    class Hamper {
        has $.name = 'Christmas Basket';
...

    say "Name: " ~ $hamper.name;
    say "Items: " ~ $hamper.items;

    Name: Christmas Basket
    Items: Mince Pie White Wine Stinky Cheese

    has @.items[3] is rw = 'Mince Pie', 'White Wine', 'Stinky Cheese';

===SORRY!=== Error while compiling /path/script.raku
Defaults on compound attribute types not yet implemented. Sorry.
...
        @!items := (initial values) unless @!items;
    }
at /path/script.raku:3

class Hamper {
    has $.name = 'Christmas Basket';
...

say "Name: " ~ $hamper.name;
say "Items: " ~ $hamper.items;

Name: Christmas Basket
Use of uninitialized value element[0] of type Any in string context.
...
Methods .^name, .raku, .gist, or .say can be used to stringify it to s
+omething meaningful.
  in block <unit> at script.raku line 16
Items:

Name: Christmas Basket
Items: Mince Pie White Wine Stinky Cheese

my $hamper = Hamper.new( items => ('Dog', 'Cat', 'Sausage') );

Name: Christmas Basket
Items: Mince Pie White Wine Stinky Cheese

method TWEAK(){
    @!items := ('Mince Pie', 'White Wine', 'Stinky Cheese', 'Sardines'
+, 'Dogfood');
}

Name: Christmas Basket
Items: Mince Pie White Wine Stinky Cheese Sardines Dogfood

    has Str @.items[3];

class Hamper {
    has $.name = 'Christmas Basket';
...

say "Name: " ~ $hamper.name;
say "Items: " ~ $hamper.items;

Type check failed in binding; expected Positional[Str] but got List ((
+"Mince Pie", "White...)
  in method TWEAK at script.raku line 9
  in block <unit> at script.raku line 13