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FieldSession

day_model

Struct FieldSession 

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pub struct FieldSession<S: 'static, T: 'static, V: 'static> { /* private fields */ }
Expand description

An explicit preview session over one field (see Field::session). Copy, like the field itself.

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impl<S: Source<T>, T: 'static, V: Clone + Default + 'static> FieldSession<S, T, V>

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pub fn preview(self, v: V)

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pub fn commit(self)

Seal the session at the current value.

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pub fn cancel(self)

Abandon the session: the pre-session value comes back (readers wake), and no record of any of it exists (what Escape does).

Trait Implementations§

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impl<S: Copy, T, V> Clone for FieldSession<S, T, V>

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<S: Copy, T, V> Copy for FieldSession<S, T, V>

Auto Trait Implementations§

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impl<S, T, V> Freeze for FieldSession<S, T, V>
where S: Freeze,

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impl<S, T, V> RefUnwindSafe for FieldSession<S, T, V>
where S: RefUnwindSafe,

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impl<S, T, V> Send for FieldSession<S, T, V>
where S: Send,

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impl<S, T, V> Sync for FieldSession<S, T, V>
where S: Sync,

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impl<S, T, V> Unpin for FieldSession<S, T, V>
where S: Unpin,

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impl<S, T, V> UnsafeUnpin for FieldSession<S, T, V>
where S: UnsafeUnpin,

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impl<S, T, V> UnwindSafe for FieldSession<S, T, V>
where S: 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> 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.