[GitHub] [arrow-nanoarrow] paleolimbot commented on pull request #16: Implement array appenders

[GitBox <gi...@apache.org>]

paleolimbot commented on PR #16:
URL: https://github.com/apache/arrow-nanoarrow/pull/16#issuecomment-1210685336

   Just a note that I'm reworking this interface based on some thoughts after working with this for a day or so:
   
   - Instead of copying all the buffer/bitmap methods for the array, just provide `ArrowArrayBuffer(array, i)` and `ArrowArrayValidityBitmap(array)` and let users pass that to all the buffer/bitmap methods. This is the fast way to do things...learn the spec and build the buffers yourself. Keeping the buffers as part of the array is nice because you don't have to remember to clean any of them up (just the topmost array).
   - Provide sqlite-inspired "append-by-value" appenders: `ArrowArrayAppendNull()`, `ArrowArrayAppendInt()`, `ArrowArrayAppendUint()`, `ArrowArrayAppendDouble()`, `ArrowArrayAppendString()` and maybe `ArrowArrayAppendBytes()`. This is slower but safer...the functions will return an error code if it's not possible to append that exact value.
   
   I think this reflects the two types of users: (1) the people that already know the spec and (2) the people that don't want to know the spec.


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