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use strict;
use warnings;
...
sub toHash {
    my %hash = @_;
}

For 2 elements:
...
toHash    41541/s      7%      --     -1%    -98%
toList    41895/s      8%      1%      --    -98%
listArg 1686904/s   4242%   3961%   3926%      --