Struct MapIterator

pub struct MapIterator<'a>(/* private fields */);

An iterator over the k/v pairs in a map.

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.

Implementations

impl MapIterator<'_>

pub fn get_pair(&self) -> (Value<'_>, Value<'_>)

Gets the next k/v pair in the map

Trait Implementations

impl<'a> AsRustType<MapIterator<'a>> for Row<'a>

fn get(&self, index: usize) -> Result<MapIterator<'a>>

Convert Cassandra column by index.

fn get_by_name<S>(&self, name: S) -> Result<MapIterator<'a>>

where S: Into<String>,

Convert Cassandra column by name.

impl<'a> Debug for MapIterator<'a>

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

Formats the value using the given formatter.

impl Drop for MapIterator<'_>

fn drop(&mut self)

Executes the destructor for this type.

impl LendingIterator for MapIterator<'_>

type Item<'a> = (Value<'a>, Value<'a>) where Self: 'a

The type of each item.

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.

fn size_hint(&self) -> (usize, Option<usize>)

Minimum and optional maximum expected length of the iterator. Default implementation returns (0, None).

impl Send for MapIterator<'_>

impl Sync for MapIterator<'_>