Trait polars_io::SerReader

pub trait SerReader<R> where
    R: Read + Seek, {
    fn new(reader: R) -> Self;
    fn finish(self) -> Result<DataFrame>;

    fn set_rechunk(self, _rechunk: bool) -> Self
    where
        Self: Sized,
    { ... }
}

Required methods

fn new(reader: R) -> Self

fn finish(self) -> Result<DataFrame>

Take the SerReader and return a parsed DataFrame.

Provided methods

fn set_rechunk(self, _rechunk: bool) -> Self where
    Self: Sized, 

Rechunk to a single chunk after Reading file.

Implementors

impl<'a, R> SerReader<R> for CsvReader<'a, R> where
    R: 'static + Read + Seek + Sync + Send, 

This is supported on crate feature csv-file only.

fn new(reader: R) -> Self

Create a new CsvReader from a file/ stream

fn finish(self) -> Result<DataFrame>

Read the file and create the DataFrame.

impl<R> SerReader<R> for IpcReader<R> where
    R: Read + Seek, 

This is supported on crate feature ipc only.

fn new(reader: R) -> Self

fn set_rechunk(self, rechunk: bool) -> Self

fn finish(self) -> Result<DataFrame>

impl<R> SerReader<R> for JsonReader<R> where
    R: Read + Seek, 

This is supported on crate feature json only.

fn new(reader: R) -> Self

fn set_rechunk(self, rechunk: bool) -> Self

fn finish(self) -> Result<DataFrame>

impl<R> SerReader<R> for ParquetReader<R> where
    R: 'static + Read + Seek + ChunkReader, 

This is supported on crate feature feature only.

fn new(reader: R) -> Self

fn set_rechunk(self, rechunk: bool) -> Self

fn finish(self) -> Result<DataFrame>