class Hamper {
        has $.name = 'Christmas Basket';
        has @.items is rw = 'Mince Pie', 'White Wine', 'Stinky Cheese';
    }

    my $hamper = Hamper.new;

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

##</code><code>##

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

##</code><code>##

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

##</code><code>##

===SORRY!=== Error while compiling /path/script.raku
Defaults on compound attribute types not yet implemented. Sorry.
Workaround: Create/Adapt TWEAK method in class Hamper, e.g:

    method TWEAK() {
        @!items := (initial values) unless @!items;
    }
at /path/script.raku:3

##</code><code>##

class Hamper {
    has $.name = 'Christmas Basket';
    has @.items[3] is rw;
    
    method TWEAK(){
        @!items := 'Mince Pie', 'White Wine', 'Stinky Cheese' unless @!items;
    }
}

my $hamper = Hamper.new;

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

##</code><code>##

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 something meaningful.
  in block <unit> at script.raku line 16
Use of uninitialized value element[1] of type Any in string context.
Methods .^name, .raku, .gist, or .say can be used to stringify it to something meaningful.
  in block <unit> at script.raku line 16
Use of uninitialized value element[2] of type Any in string context.
Methods .^name, .raku, .gist, or .say can be used to stringify it to something meaningful.
  in block <unit> at script.raku line 16
Items:

##</code><code>##

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

##</code><code>##

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

##</code><code>##

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

##</code><code>##

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

##</code><code>##

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

##</code><code>##

	has Str @.items[3];

##</code><code>##

class Hamper {
    has $.name = 'Christmas Basket';
    
    has Str @.items[3] is rw;
    
    method TWEAK(){
        @!items := ('Mince Pie', 'White Wine', 'Stinky Cheese');
    }
}

my $hamper = Hamper.new;

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

##</code><code>##

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