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    my $sizeofstring = length($string);

    my $sizeinchars = chars($string);

    my $sizeinelems = elems(@array);

    my $sizeinchars = chars(@array);

    my $ref = [1,2,3];
    my $sizeinelems = elems($ref);

    @array.elems
    $string.chars
    @array.chars
    $ref.elems

    $string.bytes
    $string.codepoints
    $string.graphemes
    $string.letters

    $string.columns

    $string.pixels