Class::Iterator - Iterator class

NAME

Class::Iterator - Iterator class

SYNOPSIS

  use Class::Iterator;
  my $it = Class::Iterator->new(\&closure_generator);

  while (my $v = $it->next) { print "value : $v\n" }


  # use map like
  my $it2 = imap { ...some code with $_...} $it
  while (my $v = $it->next) { print "value : $v\n" }

  # use grep like
  my $it3 = igrep { ...some code with $_...} $it
  while (my $v = $it->next) { print "value : $v\n" }

Class::Iterator is a generic iterator object class. It use a closure an wrap into an object interface.

new(\&closure_generator): This is the constructor. The argument is a sub which look like sub closure_generator { my $private_data; return sub { # do something with $private_data # and return it return $private_data } }
next: calling this method make one iteration.
$o = imap { ... } $it: This a creator. It create a new iterator from an existant iterator in the manner of map.
$o = igrep { ... } $it: This a creator. It create a new iterator from an existant iterator in the manner of grep.

Marc Jason Dominius's YAPC::EU 2003 classes. Ken Olstad

Class::Iterator - Iterator class