Struct polars::prelude::IpcStreamWriter

source · [−]

pub struct IpcStreamWriter<W> { /* private fields */ }

Expand description

Write a DataFrame to Arrow’s Streaming IPC format

Example

use polars_core::prelude::*;
use polars_io::ipc::IpcStreamWriter;
use std::fs::File;
use polars_io::SerWriter;

fn example(df: &mut DataFrame) -> Result<()> {
    let mut file = File::create("file.ipc").expect("could not create file");

    IpcStreamWriter::new(&mut file)
        .finish(df)
}

Implementations

impl<W> IpcStreamWriter<W>

pub fn with_compression(
self,
compression: Option<Compression>
) -> IpcStreamWriter<W>

Set the compression used. Defaults to None.

Trait Implementations

impl<W> SerWriter<W> for IpcStreamWriter<W> where
W: Write,

fn new(writer: W) -> IpcStreamWriter<W>

fn finish(&mut self, df: &mut DataFrame) -> Result<(), PolarsError>

Auto Trait Implementations

impl<W> RefUnwindSafe for IpcStreamWriter<W> where
W: RefUnwindSafe,

impl<W> Send for IpcStreamWriter<W> where
W: Send,

impl<W> Sync for IpcStreamWriter<W> where
W: Sync,

impl<W> Unpin for IpcStreamWriter<W> where
W: Unpin,

impl<W> UnwindSafe for IpcStreamWriter<W> where
W: UnwindSafe,

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T where
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn vzip(self) -> V