lidavidm opened a new issue, #73:
URL: https://github.com/apache/arrow-nanoarrow/issues/73

   While working through the ADBC SQLite driver, I noticed dense union support 
isn't available. I've also found that writing out the code for maps and lists 
by hand is a little tedious; would helper functions be useful? (For example, 
`ArrowSchemaInitList(struct ArrowSchema*, enum ArrowType list_type, enum 
ArrowType element_type, char* list_field_name)`, where `list_field_name == 
NULL` means to insert the default field name. Or maybe even omit that and 
require you to build it by hand if you need to override that.) It would be 
especially helpful for maps, though we'd have to be careful to make sure this 
keeps composing well if you have something like `dense_union<..., 4: map<int32, 
list<int32>>>` (which is in the ADBC spec at one point)


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