Do what pray? The following code (without strictures)

my @libs = qw{1 2 3 4};

foreach my $lib (@libs) {
   my $file = $lib{'file'};
   print "reading $file\n";
}
[download]

Prints:

reading 
reading 
reading 
reading
[download]

and with use strict added generates the error:

Global symbol "%lib" requires explicit package name at ... line 7.
Execution of ... aborted due to compilation errors.
[download]

which is the 'requires explicit package name' that worried the OP (and quite rightly). The OP is using strictures and they have just saved his job/his marriage/his sanity/the world, or whatever. Good OP++!