my @array = (1, 2, 3);  just an array

my $ref = \@array;    get the ref to the array

my $ref = [1, 2, 3];  make an anonymous array and get the ref

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$xxx = [ @array ]; huh??? Hey I think I found out: we mke a copy of the array in an anonymous and get the ref to it.

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@$array = (1, 2, 3);  what?!