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$student = {
    ...
    points => \@points,
};

$student = {
    ...
    points => [@points],
};

$student = {
    ...
    points => @points,
};

$student = {
    ...
...
    'b', 'c',
    'd',
};

$student = {
    ...
...
    b      => 'c',
   'd',
};