The POE site does seem a little complex. Here is an example of a script that calls one function once, then that function starts a loop of calls to a second function.

use strict;
use POE;            
use POE::Session;   


POE::Session->create(
            inline_states => {
                          _start        =>     \&start,        #_start
+ is automagicaly the first event
                          continue     =>     \&looping    #user defin
+ed event we will call later
                             }
                        );

$poe_kernel->run();  

sub start {
      my ($kernel, $heap, $session) = @_[KERNEL, HEAP, SESSION];

      print "Starting in 5!\n";
      $kernel->delay( continue => 5 ); # call the continue event in fi
+ve seconds
}

sub looping {
      my ($kernel, $heap, $session) = @_[KERNEL, HEAP, SESSION];
    
      $heap->{counter}++;    #the heap is just a hash we can put goodi
+es in.
      print "$heap->{counter} iteration!\n";
      if ($heap->{counter} < 10) {
          $kernel->delay( continue => 1 ); #start state continue in 1 
+seconds    
      }
}
[download]

Now that might look confusing but try it out. Its actualy very nice, and fun. Beats the crap out of making a loop and having counter variables to see if its time to run it or not.

Now here is the same code, but i cut and pasted parts and changed the intervals. This is why poe is pretty!

use strict;
use POE;            
use POE::Session;   


POE::Session->create(
            inline_states => {
                          _start        =>     \&start,        #_start
+ is automagicaly the first event
                          continue     =>     \&looping    #user defin
+ed event we will call later
                             }
                        );

POE::Session->create(
            inline_states => {
                          _start        =>     \&start2,        #_star
+t is automagicaly the first event
                          continue     =>     \&looping2    #user defi
+ned event we will call later
                             }
                        );


$poe_kernel->run();  

sub start {
      my ($kernel, $heap, $session) = @_[KERNEL, HEAP, SESSION];

      print "Starting A in 5! (Loops every .5 seconds) \n";
      $kernel->delay( continue => 5 ); # call the continue event in fi
+ve seconds
}

sub looping {
      my ($kernel, $heap, $session) = @_[KERNEL, HEAP, SESSION];
    
      $heap->{counter}++;    #the heap is just a hash we can put goodi
+es in.
      print "A: $heap->{counter} iteration! \n";
      if ($heap->{counter} < 100) {
          $kernel->delay( continue => .5 ); #start state continue in 1
+ seconds    
      }
}

sub start2 {
      my ($kernel, $heap, $session) = @_[KERNEL, HEAP, SESSION];

      print "Starting B in 7 (Loops every 2 seconds)!\n";
      $kernel->delay( continue => 7 ); # call the continue event in fi
+ve seconds
}

sub looping2 {
      my ($kernel, $heap, $session) = @_[KERNEL, HEAP, SESSION];
    
      $heap->{counter}++;    #the heap is just a hash we can put goodi
+es in.
      print "B: Iteration number $heap->{counter}!\n";
      if ($heap->{counter} < 100) {
          $kernel->delay( continue => 2 ); #start state continue in 1 
+seconds    
      }
}
[download]

Tested and pre-approved. :-)

___________
Eric Hodges

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