Well, as an aside ... if you pass that many parameters to a subroutine, have you considered using a hash and using name => value pairs? That would greatly reduce the risk of errors and makes all these variable declarations unnecessary ...

I was thinking of something like the following ... suitably adjusted to your concrete requirements of course (are all parameters necessary, should they get a default value if not given, ...) 

# call the sub
my_sub(userid => 'foo', password => 'bar');

sub my_sub {
  my %default_values = (userid => 'user', password => 'passwd');

  my %param = (%default_values, @_);

  print $param{userid}, $/;
  print $param{password}, $/;
  # ...
}

# or with all required arguments
sub my_sub {
  my @required = qw/userid password/;
  my %param = @_;

  for my $req (@required) {
    die "Subroutine my_sub called without required parameter: $req"
      unless exists $param{$req};
  }

  print $param{userid}, $/;
  print $param{password}, $/;
  # ...
}

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-- Hofmator

Code written by Hofmator and posted on PerlMonks is public domain. It is provided as is with no warranties, express or implied, of any kind. Posted code may not have been tested. Use of posted code is at your own risk.

In reply to Re^3: how to assign hash element value to scalar? by Hofmator
in thread how to assign hash element value to scalar? by jugdish114

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