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Class::Iterator.3pm
Langue: en
Version: 2004-01-28 (mandriva - 01/05/08)
Section: 3 (Bibliothèques de fonctions)
Sommaire
NAME
Class::Iterator - Iterator classSYNOPSIS
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" }
DESCRIPTION
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.
CREDITS
Marc Jason Dominius's YAPC::EU 2003 classes. Ken OlstadAUTHOR
Robert Silve <robert@silve.net>Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre