Struct KeyspaceIterator

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pub struct KeyspaceIterator<'a>(/* private fields */);
Expand description

Iterator over the keyspaces in the schema.

A Cassandra iterator is a LendingIterator because it borrows from some underlying value, but owns a single item. Each time next() is invoked it decodes the current item into that item, thus invalidating its previous value.

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impl<'a> Debug for KeyspaceIterator<'a>

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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 LendingIterator for KeyspaceIterator<'_>

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type Item<'a> = KeyspaceMeta<'a> where Self: 'a

The type of each item.
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fn next(&mut self) -> Option<<Self as LendingIterator>::Item<'_>>

Retrieve the next item from the iterator; it lives only as long as the mutable reference to the iterator.
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fn size_hint(&self) -> (usize, Option<usize>)

Minimum and optional maximum expected length of the iterator. Default implementation returns (0, None).
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impl Send for KeyspaceIterator<'_>

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impl Sync for KeyspaceIterator<'_>

Auto Trait Implementations§

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impl<'a> Freeze for KeyspaceIterator<'a>

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impl<'a> RefUnwindSafe for KeyspaceIterator<'a>

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impl<'a> Unpin for KeyspaceIterator<'a>

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impl<'a> UnwindSafe for KeyspaceIterator<'a>

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.
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impl<T> SendSyncUnwindSafe for T
where T: Send + Sync + UnwindSafe + ?Sized,