How to write on different output files at each iteration of loop? (Perl) -

i have hash of hashes of hashes in perl called data first level keys: f, nf , s (basically, %data={'f' => ..., 'nf' => ..., 's' => ...})

at beginning of code open 3 output handles:

open (my $fh1, ">>", $filename1) or die "cannot open > $filename1: $!"; open (my $fh2, ">>", $filename2) or die "cannot open > $filename2: $!"; open (my $fh3, ">>", $filename3) or die "cannot open > $filename3: $!"; 

then, while code runs, populates hash of hashes of hashes and, @ end, want print resulting hash of hashes each key 'f', 'nf' , 's' separate file (identified 3 file handles have defined in beginning.) i'm not sure how this. have tried following: right before foreach loop in print hash, have defined

my @file_handles=($fh1, $fh2, $fh3); $handle_index=0; 

and in each iteration of hash write file using

print $file_handles[$handle_index] "$stuff\n"; 

however, when try run code, tells me string found operator expected it's understanding i'm not telling him correctly file handle should use. suggestions?

i seem able replicate problem using file handle stored in array. perhaps not possible, though have sworn have seen used before.

>perl -lwe"open $x, '>', 'a.txt' or die $!; @x = ($x); print $x[0] 'asd';" string found operator expected @ -e line 1, near "] 'asd'"         (missing operator before  'asd'?) syntax error @ -e line 1, near "] 'asd'" execution of -e aborted due compilation errors. 

the same goes using hash. possible workarounds be:

you can skip indirect object notation , use:

$file_handles[$index]->print("$stuff\n") 

or can use perl-style loop instead print:

for $fh (@file_handles) {     print $fh "$stuff\n"; } 

indirect object notation when put object -- in case file handle -- before function call, so:

my $obj = new module; 

instead of traditionally:

my $obj = module->new; 

more information indirect object notation in perldoc perlobj