DB<55> @R= map { \$_ } $a DB<56> x @R 0 REF(0x31fae58) # -> ARRAY(0x3353230) empty array DB<57> x \$a 0 REF(0x31fae58) # same -> ARRAY(0x3353230) empty array DB<58> $b=$a DB<59> x \$b 0 REF(0x3353a58) # different -> ARRAY(0x3353230) empty array DB<60> #### DB<64> p \$a == $R[0] 1 DB<65> p \$a == \$b DB<66>