@{[$sftp->error]}

... what the brackets are doing ...

See the "Baby cart" idiom in perlsecret.

Update:

@{[$sftp->error]}
Note also that as  $sftp->error (I assume; haven't checked) returns a scalar, not a list,
    ${ \$sftp->error }
would have worked as well in a string interpolation.

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: Net::SFTP::Foreign error by AnomalousMonk
in thread Net::SFTP::Foreign error by roperl

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