An array slice is not a datastructure, it is simply a list of elements from the array. If you recall from the docs, when you do something like this:
my $ref = \ (1, 2, 3);
print ${$ref}, "\n";
The output will be '3'. You've just created a reference to an anonymous scalar value, which happened to be the last value of the list. If you had said,
my @ref = \ ( 1, 2, 3 );
print ${$_}, "\n" for @ref;
Your output would be '123'. That's because the \ operator is distributive to each element in the list; and @ref receives as values three references, each to one of the anonymous scalar values in the list.
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