# NAME List::UtilsBy::XS - XS implementation of List::UtilsBy # SYNOPSIS use List::UtilsBy::XS qw(sort_by); sort_by { $_->{foo} } @hash_ref_list You can use those functions same as List::UtilsBy ones, but some functions have limitation. See [LIMITATION](http://search.cpan.org/perldoc?LIMITATION) section. # DESCRIPTION List::UtilsBy::XS is XS implementation of List::UtilsBy. Functions are more fast than original ones. # FUNCTIONS Same as [List::UtilsBy](http://search.cpan.org/perldoc?List::UtilsBy) List::UtilsBy::XS implements following functions. - sort\_by - nsort\_by - rev\_sort\_by - rev\_nsort\_by - max\_by (alias nmax\_by) - min\_by (alias nmin\_by) - uniq\_by - partition\_by - count\_by - zip\_by - unzip\_by - extract\_by - weighted\_shuffle\_by - bundle\_by # LIMITATIONS Some functions are implemented by lightweight callback API. `sort_by`, `rev_sort_by`, `nsort_by`, `rev_nsort_by`, `min_by`, `max_by`, `nmin_by`, `nmax_by`, `uniq_by`, `partion_by`, `count_by`, `extract_by`, `weighted_shuffle_by` are limited some features. Limitations are: ## Don't change argument `$_` in code block [List::UtilsBy](http://search.cpan.org/perldoc?List::UtilsBy) localizes `$_` in the code block, but List::UtilsBy::XS doesn't localize it and it is only alias same as `map`, `grep`. So you should not modify `$_` in callback subroutine. ## Can't access to arguments as `@_` in code block You can access argument as only `$_` and cannot access as `@_`, `$_[n]`. # AUTHOR Syohei YOSHIDA # COPYRIGHT Copyright 2013- Syohei YOSHIDA # LICENSE This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. # SEE ALSO [List::UtilsBy](http://search.cpan.org/perldoc?List::UtilsBy)