Data::Frame::Indexer - Function interface for indexer
A basic feature needed in a data frame library is the ability of subsetting a data frame by either numeric indices or string labels of columns and rows. Because of the ambiguity of number and string in Perl, there needs a way to allow user to explicitly specify whether their indexer is by numeric indices or string labels. This modules provides functions that serves this purpose.
undef or an indexer object, by trying below rules,
If called with
If the argument is an indexer object, just returns it.
If the argument is a PDL of numeric types, create an indexer object
Fallbacks to create an indexer object of
indexer_s but would fallback to an indexer object of Data::Frame::Indexer::Integer.
Zakariyya Mughal <firstname.lastname@example.org>
Stephan Loyd <email@example.com>
This software is copyright (c) 2014, 2019 by Zakariyya Mughal, Stephan Loyd.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.