pub fn encode_schema_message(data_type: &DataType) -> Result<Vec<u8>>Expand description
Encode the IPC schema message for data_type as a framed,
64-byte-aligned block (one nullable field named data).
This is the schema prefix of a stream, sent once. A receiver feeds it to a
persistent StreamDecoder to prime it,
then decodes a sequence of schema-less batch messages from
encode_batch_into against the same decoder (the W3 schema-once path).