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FoldFrom

Struct FoldFrom 

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pub struct FoldFrom<InitFn, FoldFn> { /* private fields */ }
Available on crate feature std only.
Expand description

Fold but with initialization by converting the first received item.

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impl<InitFn, FoldFn> FoldFrom<InitFn, FoldFn>

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pub const fn new<Accum, Item>(init_fn: InitFn, fold_fn: FoldFn) -> Self
where Self: Accumulator<Accum, Item>,

Create a FoldFrom Accumulator with the given InitFn and FoldFn.

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impl<InitFn, FoldFn, Accum, Item> Accumulator<Accum, Item> for FoldFrom<InitFn, FoldFn>
where InitFn: Fn(Item) -> Accum, FoldFn: Fn(&mut Accum, Item),

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fn accumulate<Key>(&mut self, entry: Entry<'_, Key, Accum>, item: Item)

Accumulates a value into an either occupied or vacant table entry.
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impl<InitFn: Clone, FoldFn: Clone> Clone for FoldFrom<InitFn, FoldFn>

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fn clone(&self) -> FoldFrom<InitFn, FoldFn>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<InitFn: Debug, FoldFn: Debug> Debug for FoldFrom<InitFn, FoldFn>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<InitFn, FoldFn> Freeze for FoldFrom<InitFn, FoldFn>
where InitFn: Freeze, FoldFn: Freeze,

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impl<InitFn, FoldFn> RefUnwindSafe for FoldFrom<InitFn, FoldFn>
where InitFn: RefUnwindSafe, FoldFn: RefUnwindSafe,

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impl<InitFn, FoldFn> Send for FoldFrom<InitFn, FoldFn>
where InitFn: Send, FoldFn: Send,

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impl<InitFn, FoldFn> Sync for FoldFrom<InitFn, FoldFn>
where InitFn: Sync, FoldFn: Sync,

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impl<InitFn, FoldFn> Unpin for FoldFrom<InitFn, FoldFn>
where InitFn: Unpin, FoldFn: Unpin,

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impl<InitFn, FoldFn> UnsafeUnpin for FoldFrom<InitFn, FoldFn>
where InitFn: UnsafeUnpin, FoldFn: UnsafeUnpin,

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impl<InitFn, FoldFn> UnwindSafe for FoldFrom<InitFn, FoldFn>
where InitFn: UnwindSafe, FoldFn: 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.