See the last paragraph of print's documentation.

To keep the parser sane, print is very limited as to what it can accept for the file handle argument. It accepts a scalar variable ($fh) or a bare word (FH), and that's probably it unless you wrap the expression in curlies. Inside the curlies can be any Perl expression, including the a hash lookup as desired by the OP. 

print { $fh } ...;
print $fh ...;     # Shorthand

print { FH } ...;
print FH ...;      # Same thing, but also works under strict 'vars'.

print { *FH                    } ...;
print { $a[$i]                 } ...;
print { $h{$k}                 } ...;
print { $o->get_fh()           } ...;
print { $e ? *STDERR : *STDOUT } ...;
etc.

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In reply to Re^3: Storing open filehandles in a hash by ikegami
in thread Storing open filehandles in a hash by jpfarmer

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