in reply to Re^4: Variable number of foreach loops
in thread Variable number of foreach loops

Where will you get the variable number of arrays from? And how will you be storing them?

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Re^6: Variable number of foreach loops
by abhay180 (Sexton) on Nov 28, 2013 at 10:44 UTC
    I have stored my data in N arrays. N varies from 1..20 I have a random string, that i breakdown into some N-segments. Each Segment is then a array. Now i want to run nfor() on these. So as you can see segment size is random. Hence variable number of arrays.
[reply]

      That's not very clear. Could you post a little code to show me what you mean?

      For example, if you have code like this:

      my( @a, @b, @c );

## stuff here to fill the arrays

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      What happens if you need another array @d?

      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.
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[d/l]
[select]

        Here i have pasted sample code in which i have various combinations being generated using multiple arrays. In the code , gen_loops() is ur nfor(). I want to be able to call gen_loops() for multiple number of array elements. 

        @X = ("X1","X2","X3");
@Y = ("Y1","Y2","Y3");
@Z = ("Z1","Z2","Z3");

$HDR_SCHEMA_XY = "X::Y";
print_combinations($HDR_SCHEMA_XY);

$HDR_SCHEMA_XYZ = "X::Y::Z";
print_combinations($HDR_SCHEMA_XYZ);

sub print_combinations {
  my $sub_hdrs = shift;
  my @sub_hdrs = split(/::/,$sub_hdrs);
  my $subh_count=0;
  
  foreach my $i (@sub_hdrs) {
      @{"array_".$subh_count} =  @{ $i };
      $subh_count++;

  }
  gen_loops(2,\@array_0,\@array_1);
}

sub gen_loops {
    my $loop_count = shift;
    
    if ($loop_count==0) {
        print join "+",@_,"\n";
    } else {
                for my $i ( @{ shift() } ) {
         gen_loops($loop_count-1,$iter_count,@_,$i)
           }
    }
}

        [download]
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