Well, the straight comparison will tell you if they have the same number of things. (Arrays in scalar context give the number of things in them. Booleans are scalar contexts.)

You're probably going to have to do a member-wise comparison. Maybe something along the lines of:

# Using @x and @y in this.
sub check
{
    my ($x, $y) = @_;

    return 0 unless $#$x == $#$y;

    for (0 .. $#$x)
    {
        return 0 if $x->[$_] ne $x->[$_] && $x->[$_] != $x->[$_];
    }

    return 1;
}
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The reason for the two comparisons is to make sure that the string comparison doesn't fail with '0' vs '0.0'.

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