Module polars::frame::ser::ipc

(De)serializing Arrows IPC format.

Arrow IPC is a binary format format. It is the recommended way to serialize and deserialize Polars DataFrames as this is most true to the data schema.

Example

use polars::prelude::*;
use std::io::Cursor;


let s0 = Series::new("days", &[0, 1, 2, 3, 4]);
let s1 = Series::new("temp", &[22.1, 19.9, 7., 2., 3.]);
let mut df = DataFrame::new(vec![s0, s1]).unwrap();

// Create an in memory file handler.
// Vec<u8>: Read + Write
// Cursor<T>: Seek

let mut buf: Cursor<Vec<u8>> = Cursor::new(Vec::new());

// write to the in memory buffer
IPCWriter::new(&mut buf).finish(&mut df).expect("ipc writer");

// reset the buffers index after writing to the beginning of the buffer
buf.set_position(0);

// read the buffer into a DataFrame
let df_read = IPCReader::new(buf).finish().unwrap();
assert!(df.frame_equal(&df_read));

Structs

IPCReader	Read Arrows IPC format into a DataFrame
IPCWriter	Write a DataFrame to Arrow's IPC format