Struct ReadColumns

pub struct ReadColumns<'a, R>(/* private fields */)
where
    R: Region;

Read the values of a row.

Implementations

impl<'a, R> ReadColumns<'a, R>

where R: Region,

pub fn iter(&'a self) -> ReadColumnsIter<'a, R>

Iterate the individual values of a row.

pub fn get(&self, offset: usize) -> <R as Region>::ReadItem<'a>

Get the element at offset.

pub fn len(&self) -> usize

Returns the length of this row.

pub fn is_empty(&self) -> bool

Returns true if this row is empty.

Trait Implementations

impl<'a, R> Clone for ReadColumns<'a, R>

where R: Region,

fn clone(&self) -> ReadColumns<'a, R>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a, R> Debug for ReadColumns<'a, R>

where R: Region, <R as Region>::ReadItem<'a>: Debug,

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

Formats the value using the given formatter.

impl<'a, R> IntoIterator for &ReadColumns<'a, R>

where R: Region,

type Item = <R as Region>::ReadItem<'a>

The type of the elements being iterated over.

type IntoIter = ReadColumnsIter<'a, R>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <&ReadColumns<'a, R> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<'a, R> IntoOwned<'a> for ReadColumns<'a, R>

where R: Region,

type Owned = Vec<<R as Region>::Owned>

Owned type into which this type can be converted.

fn into_owned(self) -> <ReadColumns<'a, R> as IntoOwned<'a>>::Owned

Conversion from an instance of this type to the owned type.

fn clone_onto(self, other: &mut <ReadColumns<'a, R> as IntoOwned<'a>>::Owned)

Clones self onto an existing instance of the owned type.

fn borrow_as( owned: &'a <ReadColumns<'a, R> as IntoOwned<'a>>::Owned, ) -> ReadColumns<'a, R>

Borrows an owned instance as oneself.

impl<R> Push<ReadColumns<'_, R>> for ColumnsRegion<R>

where R: for<'a> Region + for<'a> Push<<R as Region>::ReadItem<'a>>,

fn push( &mut self, item: ReadColumns<'_, R>, ) -> <ColumnsRegion<R> as Region>::Index

Push item into self, returning an index that allows to look up the corresponding read item.

impl<'a, R> Copy for ReadColumns<'a, R>

where R: Region,