Struct take_mut::scoped::Hole

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pub struct Hole<'c, 'm, T: 'm, F: FnOnce() -> T> { /* private fields */ }

Expand description

A Hole<'c, 'm, T, F> represents an unfilled &'m mut T which must be filled before the end of the Scope with lifetime 'c and recovery closure F.

An unfilled Hole<'c, 'm, T, F> that is destructed will try to use F` to fill the hole.

If the scope ends without the Hole being filled, the program will std::process::abort().

Implementations

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impl<'c, 'm, T: 'm, F: FnOnce() -> T> Hole<'c, 'm, T, F>

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pub fn fill(self, t: T)

Fills the Hole.

Trait Implementations

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impl<'c, 'm, T: 'm, F: FnOnce() -> T> Drop for Hole<'c, 'm, T, F>

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fn drop(&mut self)

Executes the destructor for this type. Read more

Auto Trait Implementations

impl<'c, 'm, T, F> !RefUnwindSafe for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> !Send for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> !Sync for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> Unpin for Hole<'c, 'm, T, F> where
F: Unpin,

impl<'c, 'm, T, F> !UnwindSafe for Hole<'c, 'm, T, F>

Blanket Implementations

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impl<T> Any for T where
T: 'static + ?Sized,

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pub 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,

const: unstable · source

pub 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,

const: unstable · source

pub 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

const: unstable · source

pub fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T where
U: From<T>,

const: unstable · source

pub 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, U> TryFrom for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

pub fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct take_mut::scoped::Hole

Implementations

impl<'c, 'm, T: 'm, F: FnOnce() -> T> Hole<'c, 'm, T, F>

pub fn fill(self, t: T)

Trait Implementations

impl<'c, 'm, T: 'm, F: FnOnce() -> T> Drop for Hole<'c, 'm, T, F>

fn drop(&mut self)

Auto Trait Implementations

impl<'c, 'm, T, F> !RefUnwindSafe for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> !Send for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> !Sync for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> Unpin for Hole<'c, 'm, T, F> where
F: Unpin,

impl<'c, 'm, T, F> !UnwindSafe for Hole<'c, 'm, T, F>

Blanket Implementations

impl<T> Any for T where
T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where
T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where
T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where
U: From<T>,

pub fn into(self) -> U

impl<T, U> TryFrom<U> for T where
U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Struct take_mut::scoped::Hole

Implementations

impl<'c, 'm, T: 'm, F: FnOnce() -> T> Hole<'c, 'm, T, F>

pub fn fill(self, t: T)

Trait Implementations

impl<'c, 'm, T: 'm, F: FnOnce() -> T> Drop for Hole<'c, 'm, T, F>

fn drop(&mut self)

Auto Trait Implementations

impl<'c, 'm, T, F> !RefUnwindSafe for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> !Send for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> !Sync for Hole<'c, 'm, T, F>

impl<'c, 'm, T, F> Unpin for Hole<'c, 'm, T, F> where F: Unpin,

impl<'c, 'm, T, F> !UnwindSafe for Hole<'c, 'm, T, F>

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

pub fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

pub fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

pub fn borrow_mut(&mut self) -> &mut T

impl<T> From<T> for T

pub fn from(t: T) -> T

impl<T, U> Into<U> for T where U: From<T>,

pub fn into(self) -> U

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

impl<'c, 'm, T, F> Unpin for Hole<'c, 'm, T, F> where
F: Unpin,

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,