[DFDL-WG] 0 equals ""?

Mon Jun 3 08:39:44 EDT 2013

When are these not functionally equal?

                        <dfdl:discriminator>{ dfdl:valueLength(../Empty, "bytes") eq 0 }</dfdl:discriminator>
                        <dfdl:discriminator>{ ../Empty eq "" }</dfdl:discriminator>

TIA
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