I see no such example code and the Data::Dumper output you show elsewhere is inconsistent with the loop. The dump shows a hash where the loop expects an array.

Furthermore your assertion that "I expected to see output, instead, I get nothing" is inconsistent with the combination of dump and the for loop syntax. The for loop is expecting an array reference and is getting a hash reference - is should complain "Not an ARRAY reference at ...".

The following probably gets the data you want (untried):

my $results = $nt->show_user($twitterID);

my $id =  $results->{id};
my $name = $results->{name};
print STDOUT $id."   ".$name."<br>";
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