rust-data-processing 0.2.2

Schema-first ingestion (CSV, JSON, Parquet, Excel) into an in-memory DataSet, plus Polars-backed pipelines, SQL, profiling, validation, and map/reduce-style processing.
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[
  {"id": 1, "ts": 100},
  {"id": 2, "ts": 101},
  {"id": 3, "ts": 50},
  {"id": 4, "ts": 200}
]