如何在Perl 6中定义Ints的Arrayreference的自定义类型？

Question

如何在Perl 6中定义Ints的自定义类型的Ints参考？我试过这个,但它不起作用:

subset Array_of_Int of Array where *.all ~~ Int;

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my $n = My::Class.new( option => < 22 3 4 5 > );

# Type check failed in assignment to $!option; expected My::Class::Array_of_Int but got List in block <unit> at ...

Answer 1

在My :: Class中:

has Int @.option;