pub enum Control<B = ()> {
    Continue,
    Break(B),
}
Expand description

Basic control flow enum that can be used when visiting query results.

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Continue

Indicates to the query function to continue visiting results.

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Break(B)

Indicates to the query function to stop visiting results and return a value.

Trait Implementations§

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impl<B> ControlFlow for Control<B>

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fn continuing() -> Self

Constructs state indicating to continue.
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fn should_break(&self) -> bool

Should return true if control flow should break.
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impl<B: Debug> Debug for Control<B>

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

Formats the value using the given formatter. Read more
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impl<B> Default for Control<B>

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fn default() -> Control<B>

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

Auto Trait Implementations§

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impl<B> RefUnwindSafe for Control<B>
where B: RefUnwindSafe,

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impl<B> Send for Control<B>
where B: Send,

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impl<B> Sync for Control<B>
where B: Sync,

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impl<B> Unpin for Control<B>
where B: Unpin,

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impl<B> UnwindSafe for Control<B>
where B: 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, 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.