[GitHub] [arrow-datafusion] crepererum commented on pull request #5442: feat: `extensions_options` macro

["crepererum (via GitHub)" <gi...@apache.org>]

crepererum commented on PR #5442:
URL: https://github.com/apache/arrow-datafusion/pull/5442#issuecomment-1450356790

   The issue with prog macros (which I think is what you mean with "attribute macros") is: they are slower, more complicated to write & test, and you ideally have a trait just for the prog macro because they are compiled just to check/document the downstream and you wanna avoid that for costly crates.
   
   If you meant "can you just use a macro syntax for defaults"? Ahh, maybe. If there's strong desire to do that, I can try (although I'm not sure if traditional macros can match on macro-like attributes).


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