Wrap the hash in a pair of braces:

my %hash;
open $hash{fh}, '>', 'foo' or die $!;
print {$hash{fh}} "foo";
#     ^         ^

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Unless I state otherwise, all my code runs with strict and warnings

In reply to Re: using a filehandle stored in a hash by FunkyMonk
in thread using a filehandle stored in a hash by DavidFerrington

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