$ perl -MDP -E'@_=map{$_."\n"}1..5;DDumper[@_]'
[   '1
',
    '2
',
    '3
',
    '4
',
    '5
'
    ]
$ perl -MDP -E'@_=map{$_."\n"}1..5;DDumper[map{chomp}@_]'
[   1,
    1,
    1,
    1,
    1
    ]
$ perl -MDP -E'@_=map{$_."\n"}1..5;DDumper[map{chomp;$_}@_]'
[   1,
    2,
    3,
    4,
    5
    ]