Hello,

Further to my recent node 474948 i have a question relating to flattened hashes and arrays.

When an array or hash is passed to a subroutine or function it is flattened and so if it is passed as (@, $) and recieved as (@, $) the $ will have no value.

Is this the same with passing to an external script using the exec function.

At the moment i am doing this:

  exec = ("BlastTool.cgi", "$date", "$show_filter", "$oldRefFile",
 "$blast_filehandle", "$ref_filehandle", "$email", 
 "$send_email","$show_all", "\@OrigRef", "\@blastLine", 
 "\@species_filter", "\@chromo_filter", 
 "\@advanced_filter") or die;

[download]

In script one, then passing to script 2

  my $date = shift @_;
  my $show_filter = shift @_;
  my $oldRefFile = shift @_;
  my $blast_filehandle = shift @_;
  my $ref_filehandle = shift @_;
  my $email = shift @_;
  my $send_email = shift @_;
  my $show_all = shift @_;
  my @OrigRef = @{shift @_};
  my @blastLine = @{shift @_};
  my @species_filter = @{shift @_};
  my @chromo_filter = @{shift @_};
  my @advanced_filter = @{shift @_};

[download]
Is this right or am i way off here.
I have had a look at this node which is asking the same thing but there is no reference to arrays or hashes with using system.

I have also noticed that i have left out the @args at the end of the exec function: exec("program", "params", @args);
Does this matter.

cheers.

In reply to Passing and recieving params by MonkPaul

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