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FAQ: In Raku, how to remove duplicates from a list to only get unique values?
my $arr = [1, 2, 3, 2, 3, 1, 1, 0];
# desired output [1, 2, 3, 0]
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Remove duplicates from list using Set. To remove the duplicates from a list, you can make use of the built-in function set(). The specialty of set() method is that it returns distinct elements. We have a list : [1,1,2,3,2,2,4,5,6,2,1].
If the order of the elements is not critical, we can remove duplicates using the Set method and the Numpy unique() function. We can use Pandas functions, OrderedDict, reduce() function, Set + sort() method, and iterative approaches to keep the order of elements.
Thanks to the Enum module, in Elixir we can trivially remove duplicates from a list. In the following example, we take a list of integers and pass it to the Enum. uniq/1 function which removes duplicates from the list without altering the original order of the remaining elements.
@arr.unique # (1 2 3 0)
my %unique = map {$_ => 1}, @arr;
%unique.keys; # (0 1 2 3) do not rely on order
set(@arr).keys
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