collections/columnar_view_utils library

Columnar view of list<Map<String, Object?>> for analytics — roadmap #470.

Functions

columnValues(List<Map<String, Object?>> rows, String key) → List<Object?>

Returns a single column key from rows as List<Object?>.

toColumnar(List<Map<String, Object?>> rows) → Map<String, List<Object?>>

Returns map of key -> list of values for all keys in rows.