Struct BatchedWriter

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pub struct BatchedWriter<W: Write> { /* private fields */ }

Available on crate features ipc or ipc_streaming only.

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impl<W: Write> BatchedWriter<W>

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pub fn write_batch(&mut self, df: &DataFrame) -> PolarsResult<()>

Write a batch to the ipc writer.

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The caller must ensure the chunks in the given DataFrame are aligned.

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pub fn write_encoded( &mut self, dictionaries: &[EncodedData], message: &EncodedData, ) -> PolarsResult<()>

Write a encoded data to the ipc writer.

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The caller must ensure the chunks in the given DataFrame are aligned.

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pub fn finish(&mut self) -> PolarsResult<()>

Writes the footer of the IPC file.

Auto Trait Implementations§

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impl<W> !UnwindSafe for BatchedWriter<W>

Blanket Implementations§

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

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Gets the TypeId of self. Read more

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where T: ?Sized,

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impl<T> BorrowMut<T> for T
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impl<T> From<T> for T

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

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Calls U::from(self).

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

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Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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