It expects a Perl file handle (which doesn't mean it needs to be connected to a file). open will do. Any descendant of IO::Handle (such as IO::File) will do as well. A tied file handle should work as well.

Update: If you want to create a file handle that accesses a scalar, then you can do the following in ≥5.8.0: 

open(my $fh, '<', \$blob)

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In reply to Re: CSV data processing by ikegami
in thread CSV data processing by normskib

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