Re^2: how can i check an array element as empty or not

you could also

C:\>perl -le print(chr(9)) |cat -v
        ^M

C:\>perl -le print(chr(9)) |od -tax1
0000000  ht  cr  nl
        09 0d 0a
0000003

C:\>perl -le print(chr(9)) |hexdump
00000000: 09 0D 0A                -                         |   |
00000003;
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