[ARROW-12291] [R] Determine the type of an unevaluated expression

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: R
• External issue URL: https://github.com/apache/arrow/issues/28096
• Assignee: Neal Richardson
• Reporter: Ian Cook
• Created: 08/Apr/21 03:40
• Updated: 11/Jan/23 08:25
• Resolved: 13/May/21 15:48

Description

There would be several benefits to knowing the data type of an expression before its value has actually been computed. Probably the greatest benefit would be that other expressions could then behave dynamically based on the data types of their inputs. Consider how this capability might be implemented.

Issue Links

• is depended upon by: ARROW-12778 [R] Support tidyselect where() selection helper in dplyr verbs