bookdata::io::object::transform

Struct MapWriter

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pub struct MapWriter<F, T1, T2, W>
where
    W: ObjectWriter<T2>,
    F: Fn(T1) -> Result<T2>,
{
    pub(crate) _phantom: PhantomData<(T1, T2)>,
    pub(crate) transform: F,
    pub(crate) writer: W,
}
Expand description

Writer that applies a transform to an underlying writer.

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§_phantom: PhantomData<(T1, T2)>§transform: F§writer: W

Trait Implementations§

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impl<F, T1, T2, W> ObjectWriter<T1> for MapWriter<F, T1, T2, W>
where W: ObjectWriter<T2>, F: Fn(T1) -> Result<T2>,

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fn write_object(&mut self, object: T1) -> Result<()>

Write one object.
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fn finish(self) -> Result<usize>

Finish and close the target.
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fn write_all_objects<I>(&mut self, objects: I) -> Result<usize>
where I: Iterator<Item = T>,

Write an iterator full of objects.
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fn write_and_finish<I>(self, objects: I) -> Result<usize>
where I: Iterator<Item = T>,

Write an iterator of objects and finish the writer.
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fn with_transform<F, T2>(self, transform: F) -> MapWriter<F, T2, T, Self>
where F: Fn(T2) -> Result<T>,

Wrap this object writer in a transformed writer.

Auto Trait Implementations§

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impl<F, T1, T2, W> Freeze for MapWriter<F, T1, T2, W>
where F: Freeze, W: Freeze,

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impl<F, T1, T2, W> RefUnwindSafe for MapWriter<F, T1, T2, W>
where F: RefUnwindSafe, W: RefUnwindSafe, T1: RefUnwindSafe, T2: RefUnwindSafe,

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impl<F, T1, T2, W> Send for MapWriter<F, T1, T2, W>
where F: Send, W: Send, T1: Send, T2: Send,

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impl<F, T1, T2, W> Sync for MapWriter<F, T1, T2, W>
where F: Sync, W: Sync, T1: Sync, T2: Sync,

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impl<F, T1, T2, W> Unpin for MapWriter<F, T1, T2, W>
where F: Unpin, W: Unpin, T1: Unpin, T2: Unpin,

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impl<F, T1, T2, W> UnwindSafe for MapWriter<F, T1, T2, W>
where F: UnwindSafe, W: UnwindSafe, T1: UnwindSafe, T2: UnwindSafe,

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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, U> Into<U> 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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impl<T> IntoResult<T> for T

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type Err = Infallible

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fn into_result(self) -> Result<T, <T as IntoResult<T>>::Err>

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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,