@{$difference[0]}
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Error -- >Can't use string ("ARRAY(0x2c992e0)") as an ARRAY ref while "strict refs" in use at
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@{$difference}
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Global symbol "$difference" requires explicit package name at
Global symbol "$intersect" requires explicit package name at
Global symbol "$union" requires explicit package name at .
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@difference
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DEBUG: - difference links values ARRAY(0x32690e0) ARRAY(0x3269090) ARRAY(0x322d040) ARRAY(0x3276990) ARRAY(0x322d060) ARRAY(0x3269f80) ARRAY(0x3269040)
DEBUG: - intersect links values
DEBUG: - union links values ARRAY(0x32690e0) ARRAY(0x3269090) ARRAY(0x322d040) ARRAY(0x3276990) ARRAY(0x322d060) ARRAY(0x3269f80) ARRAY(0x3269040)