Enum AsyncWriteable

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pub enum AsyncWriteable {
    Local(File),
    Cloud(BufWriter),
}

Available on crate feature cloud only.

Expand description

Holds an async writeable file, abstracted over local files or cloud files.

This implements DerefMut to a trait object implementing [tokio::io::AsyncWrite].

Note: It is important that you do not call shutdown() on the deref’ed AsyncWrite object. You should instead call the AsyncWriteable::close at the end.

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Local(File)

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Cloud(BufWriter)

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impl AsyncWriteable

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pub async fn try_new( path: &str, cloud_options: Option<&CloudOptions>, ) -> PolarsResult<Self>

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pub async fn close(self) -> PolarsResult<()>

Trait Implementations§

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impl Deref for AsyncWriteable

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type Target = dyn AsyncWrite + Unpin + Send

The resulting type after dereferencing.

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fn deref(&self) -> &Self::Target

Dereferences the value.

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impl DerefMut for AsyncWriteable

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fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

Auto Trait Implementations§

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impl !UnwindSafe for AsyncWriteable

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

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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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
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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