support arrays

Author: nevi-me

src/io/JSON.md

@@ -5,18 +5,19 @@ This is a brain-dump of what we want to achieve with JSON IO.
 ### Reader
 
 - [X] Read user schema
-- [ ] Support other numeric types other than `Float64, Int64`
+- [X] Support other numeric types other than `Float64, Int64`
 - [X] Infer schema (basic)
-- [ ] Infer schema (lists and structs)
+- [X] Infer list schema
+- [ ] Infer struct schema
 - [ ] Coerce fields that have scalars and lists to lists
-- [ ] Support projection using field names
+- [X] Support projection using field names
 - [ ] Add option for dealing with case sensitivity
-- [ ] Coerce fields that can't be casted to provided schema (e.g. if one can't get int because of a float, convert the int to float instead of leaving null)
+- [X] Coerce fields that can't be casted to provided schema (e.g. if one can't get int because of a float, convert the int to float instead of leaving null)
 - [ ] Reduce repetition where possible
 - [ ] Parity with CPP implementation (there's a Google Doc that has the spec)
 - [ ] Add comprehensive tests
-  - [ ] Nulls at various places
+  - [X] Nulls at various places
   - [ ] *All* supported Arrow types
-  - [ ] Corrupt files and non-line-delimited files
+  - [X] Corrupt files and non-line-delimited files
   - [ ] Files where schemas don't match at all 
 - [ ] Performance testing?