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sub get_x {
    my @x = qw( stuff );
    return wantarray ? @x : \@x;
}

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```
    return wantarray ? @x : \@x;
```
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```
    return wantarray ? @x : $x[0];
```

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my $dewdrop_description = get_droplet();
$dewdrop_description->{substance}       = 'water';
$dewdrop_description->{molecular_array} = get_moles( 'water' );
$dewdrop_description->{temperature}     = 37;

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my $dewdrop_description = {
    %{ get_droplet() },
...
    molecular_array => get_moles( 'water' ),
    temperature     => 37,
};

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    return wantarray ? @moles : \@moles;

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```
my ($scalar) = why();
```

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sub get_or_set {
    my $self = shift;
...

    return $self->{stuff};
}

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my @x = ();        # but I thought it was qw( foo ) !
get_or_set( @x );  # set value