Struct bookdata::interactions::ratings::RatingDedup

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pub struct RatingDedup<R>
where
    R: FromRatingSet,
{
    _phantom: PhantomData<R>,
    table: HashMap<Key, Vec<(f32, i64)>>,
}
Expand description

Rating deduplicator.

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§_phantom: PhantomData<R>§table: HashMap<Key, Vec<(f32, i64)>>

Implementations§

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impl<R> RatingDedup<R>
where R: FromRatingSet + TableRow + Send + Sync + 'static,

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pub fn record(&mut self, user: i32, item: i32, rating: f32, timestamp: i64)

Add a rating to the deduplicator.

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pub fn write_ratings<P: AsRef<Path>>(&mut self, path: P) -> Result<usize>

Save the rating table disk.

Trait Implementations§

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impl<I: Interaction, R> Dedup<I> for RatingDedup<R>
where R: FromRatingSet + TableRow + Send + Sync + 'static,

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fn add_interaction(&mut self, act: I) -> Result<()>

Save an item in the deduplciator.
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fn save(&mut self, path: &Path) -> Result<usize>

Write the de-duplicated reuslts to a file.
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impl<R> Default for RatingDedup<R>
where R: FromRatingSet + TableRow + Send + Sync + 'static,

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fn default() -> RatingDedup<R>

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl<R> RefUnwindSafe for RatingDedup<R>
where R: RefUnwindSafe,

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impl<R> Send for RatingDedup<R>
where R: Send,

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impl<R> Sync for RatingDedup<R>
where R: Sync,

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impl<R> Unpin for RatingDedup<R>
where R: Unpin,

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impl<R> UnwindSafe for RatingDedup<R>
where R: UnwindSafe,

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, 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> 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