[ARROW-13853] [R] String to_title, to_lower, to_upper kernels

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: R
• Labels: kernel pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29474
• Assignee: Eduardo Ponce
• Reporter: Neal Richardson
• Created: 01/Sep/21 20:22
• Updated: 11/Jan/23 08:35
• Resolved: 30/Sep/21 12:52

Description

ARROW-12714 added the str_to_title kernel and a basic mapping, but we should add a test. Also the stringr function takes a "locale" argument which is not handled here; we should either pass it to Arrow C++ if it supports it (which I doubt) or error if a value is provided in R.

This also applies to str_to_lower and str_to_upper kernels.

Issue Links

• is related to: ARROW-14126 [C++] Add locale support for relevant string compute functions
• links to: GitHub Pull Request #11232