On 2010.04.28 22:04, Harry Putnam wrote:
> Your reference to `call back' is probably just the ticket... but I
> will show actual code that tries to do what I need, and maybe you can
> show how a `call back would work.
This is pretty simple and has no inherent complexity whatsoever, but
hopefully it will make some sense. Essentially, I have one of the subs
that are included in the dispatch table that directly calls another sub
within the same table.
First note that this will run forever :)
Also, there's no proper conditional logic involved here, the dispatch
table subs are just calling back to other subs from within the dispatch
table randomly. Hopefully it gives you an idea of what I was trying to say.
Use:
# ./dt.pl N (where N == 1, 2 or 3)
#!/usr/bin/perl
use warnings;
use strict;
my $input = $ARGV[0];
my %dt = (
1 => \&a,
2 => \&b,
3 => \&c,
);
sub a {
my $param = shift;
print "1\n";
my $num = get_num();
$dt{ $param }( $num );
}
sub b {
my $param = shift;
print "2\n";
my $num = get_num();
$dt{ $param }( $num );
}
sub c {
my $param = shift;
print "3\n";
my $num = get_num();
$dt{ $param }( $num );
}
sub get_num {
return int( rand( 3 ) +1 );
}
$dt{ $input }( $input );
Steve
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