[ARROW-16888] [R] Add functionality to allow binding registration with the `pkg::fun` name

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 8.0.0
• Component/s: R
• External issue URL: https://github.com/apache/arrow/issues/32210
• Assignee: Dragoș Moldovan-Grünfeld
• Reporter: Dragoș Moldovan-Grünfeld
• Created: 23/Jun/22 09:10
• Updated: 11/Jan/23 11:47
• Resolved: 04/Jul/22 12:11

Description

• Modify register_binding() to register 2 identical copies for each pkg::fun binding, fun and pkg::fun.
• Add a binding for the :: operator, which helps with retrieving bindings from the function registry.
• Add generic unit tests for the pkg::fun functionality.