Trait polars_io::SerReader

pub trait SerReader<R>where
    R: Read,{
    // Required methods
    fn new(reader: R) -> Self;
    fn finish(self) -> PolarsResult<DataFrame>;

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

Required Methods

fn new(reader: R) -> Self

Create a new instance of the [SerReader]

fn finish(self) -> PolarsResult<DataFrame>

Take the SerReader and return a parsed DataFrame.

Provided Methods

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

Make sure that all columns are contiguous in memory by aggregating the chunks into a single array.

Object Safety

This trait is not object safe.

Implementors

impl<'a, R> SerReader<R> for CsvReader<'a, R>where R: MmapBytesReader + 'a,

Available on crate features csv or json only.

impl<'a, R> SerReader<R> for JsonReader<'a, R>where R: MmapBytesReader,

Available on crate feature json only.

impl<'a, R> SerReader<R> for JsonLineReader<'a, R>where R: MmapBytesReader,

Available on crate feature json only.

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

Available on crate feature avro only.

impl<R> SerReader<R> for IpcStreamReader<R>where R: Read,

Available on crate feature ipc_streaming and (crate features ipc or ipc_streaming) only.

impl<R: MmapBytesReader> SerReader<R> for IpcReader<R>

Available on crate feature ipc and (crate features ipc or ipc_streaming) only.

impl<R: MmapBytesReader> SerReader<R> for ParquetReader<R>

Available on crate feature parquet only.