Map

xitca_postgres::iter

Struct Map 

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pub struct Map<I, F> { /* private fields */ }

Trait Implementations§

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impl<I, F, T, E> AsyncLendingIterator for Map<I, F>
where I: AsyncLendingIterator + Send, F: Fn(Result<I::Ok<'_>, I::Err>) -> Result<T, E> + Send, T: Send, E: Send,

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type Ok<'i> = T where Self: 'i

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type Err = E

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async fn try_next(&mut self) -> Result<Option<Self::Ok<'_>>, Self::Err>

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fn size_hint(&self) -> (usize, Option<usize>)

Auto Trait Implementations§

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impl<I, F> Freeze for Map<I, F>
where I: Freeze, F: Freeze,

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impl<I, F> RefUnwindSafe for Map<I, F>
where I: RefUnwindSafe, F: RefUnwindSafe,

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impl<I, F> Send for Map<I, F>
where I: Send, F: Send,

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impl<I, F> Sync for Map<I, F>
where I: Sync, F: Sync,

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impl<I, F> Unpin for Map<I, F>
where I: Unpin, F: Unpin,

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impl<I, F> UnwindSafe for Map<I, F>
where I: UnwindSafe, F: 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<I> AsyncLendingIteratorExt for I
where I: AsyncLendingIterator,

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fn map_ok<F, O>(self, func: F) -> MapOk<Self, F>
where F: Fn(Self::Ok<'_>) -> O, Self: Sized,

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fn map_err<F, O>(self, func: F) -> MapErr<Self, F>
where F: Fn(Self::Err) -> O, Self: Sized,

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fn try_map<F, T, E>(self, func: F) -> Map<Self, F>
where F: Fn(Result<Self::Ok<'_>, Self::Err>) -> Result<T, E>, Self: Sized,

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fn try_collect<T>(self) -> impl Future<Output = Result<T, Self::Err>> + Send
where T: Default + for<'i> Extend<Self::Ok<'i>> + Send, Self: Send + Sized,

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fn try_collect_into<T>( self, collection: &mut T, ) -> impl Future<Output = Result<&mut T, Self::Err>> + Send
where T: for<'i> Extend<Self::Ok<'i>> + Send, Self: Send + Sized,

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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> 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