[ARROW-8113] [C++] Implement a lighter-weight variant

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.16.0
• Fix Version/s: 3.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24322
• Assignee: Ben Kietzman
• Reporter: Ben Kietzman
• Created: 13/Mar/20 14:13
• Updated: 11/Jan/23 07:58
• Resolved: 08/Dec/20 12:19

Description

util::variant is an extremely useful structure but its header slows compilation significantly, so using it in public headers is questionable https://github.com/apache/arrow/pull/6545#discussion_r388406246

I'll try writing a lighter weight version.

Issue Links

• links to: GitHub Pull Request #8472