paleolimbot commented on code in PR #16:
URL: https://github.com/apache/arrow-nanoarrow/pull/16#discussion_r942437669


##########
src/nanoarrow/nanoarrow.h:
##########
@@ -508,9 +512,31 @@ void ArrowArraySetValidityBitmap(struct ArrowArray* array, 
struct ArrowBitmap* b
 ArrowErrorCode ArrowArraySetBuffer(struct ArrowArray* array, int64_t i,
                                    struct ArrowBuffer* buffer);
 
+static inline struct ArrowBitmap* ArrowArrayValidityBitmap(struct ArrowArray* 
array);
+
+static inline struct ArrowBuffer* ArrowArrayBuffer(struct ArrowArray* array, 
int64_t i);
+
+static inline ArrowErrorCode ArrowArrayReserve(struct ArrowArray* array,
+                                               int64_t 
additional_size_elements);
+
+static inline ArrowErrorCode ArrowArrayResize(struct ArrowArray* array,
+                                              int64_t new_capacity_elements,
+                                              char shrink_to_fit);
+
+static inline ArrowErrorCode ArrowArrayAppendNull(struct ArrowArray* array, 
int64_t n);
+
+static inline ArrowErrorCode ArrowArrayAppendInt(struct ArrowArray* array, 
int64_t value);

Review Comment:
   At the point that one is appending by element, does the time required to 
cast to 64-bit width and back matter? The truly fast way to do it would be 
`ArrowBufferAppendUnsafe(ArrowArrayBuffer(array, 1), &value, sizeof(int16_t)))`.



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