Trait polars::prelude::SerReader

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

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

Available on crate feature polars-io only.

Required Methods

fn new(reader: R) -> Self

Create a new instance of the [SerReader]

fn finish(self) -> Result<DataFrame, PolarsError>

Take the SerReader and return a parsed DataFrame.

Provided Methods

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

where 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 JsonLineReader<'a, R>

where R: MmapBytesReader,

impl<'a, R> SerReader<R> for JsonReader<'a, R>

where R: MmapBytesReader,

impl<R> SerReader<R> for CsvReader<R>

where R: MmapBytesReader,

impl<R> SerReader<R> for IpcReader<R>

where R: MmapBytesReader,

impl<R> SerReader<R> for IpcStreamReader<R>

where R: Read,

impl<R> SerReader<R> for ParquetReader<R>

where R: MmapBytesReader,