Пакет perl-Iterator: Информация
Исходный пакет: perl-Iterator
Версия: 0.03-alt1_6
Собран: 19 февраля 2016 г. 8:34 в задании #159640
Категория: Разработка/Perl
Сообщить об ошибке в пакетеДомашняя страница: http://search.cpan.org/dist/Iterator
Лицензия: GPL+ or Artistic
О пакете: A general-purpose iterator class
Описание:
This module is meant to be the definitive implementation of iterators, as popularized by Mark Jason Dominus's lectures and recent book (_Higher Order Perl_, Morgan Kauffman, 2005). An "iterator" is an object, represented as a code block that generates the "next value" of a sequence, and generally implemented as a closure. When you need a value to operate on, you pull it from the iterator. If it depends on other iterators, it pulls values from them when it needs to. Iterators can be chained together (see the Iterator::Util manpage for functions that help you do just that), queueing up work to be done but _not actually doing it_ until a value is needed at the front end of the chain. At that time, one data value is pulled through the chain. Contrast this with ordinary array processing, where you load or compute all of the input values at once, then loop over them in memory. It's analogous to the difference between looping over a file one line at a time, and reading the entire file into an array of lines before operating on it.
Сопровождающий: Igor Vlasenko
Последнее изменение
17 февраля 2016 г. Igor Vlasenko 0.03-alt1_6
- update by mgaimport
17 декабря 2014 г. Igor Vlasenko 0.03-alt1_5
- update by mgaimport
7 октября 2014 г. Igor Vlasenko 0.03-alt1_4
- update by mgaimport