##
DB<41> print scalar (@a=(5,6))
2
DB<42> print scalar (@a=(6))
1
DB<43> print scalar (@a=())
0
####
DB<49> print scalar ( ($a)=(5,6,7) )
3
DB<50> print scalar ( ($a,$b)=(5,6,7) )
3
DB<51> print scalar ( ()=(5,6,7) )
3