Struct Columns

pub struct Columns<R> { /* private fields */ }

Column denotes a set of cells on given columns on a Table.

Implementations

impl<R> Columns<R>

where R: RangeBounds<usize>,

pub fn new(range: R) -> Self

Returns a new instance of Columns for a range of columns.

If the boundaries are exceeded it may panic.

impl Columns<()>

pub fn single(index: usize) -> Column

Returns a new instance of Columns for a single column.

If the boundaries are exceeded it may panic.

pub fn first() -> FirstColumn

Returns a new instance of Columns for a first column.

If the boundaries are exceeded the object will produce no cells.

pub fn last() -> LastColumn

Returns a new instance of Columns for a last column.

If the boundaries are exceeded the object will produce no cells.

Trait Implementations

impl<R: Debug> Debug for Columns<R>

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

Formats the value using the given formatter.

impl<B> Locator for Columns<B>

where B: RangeBounds<usize>,

type Coordinate = usize

A coordinate of the finding.

type IntoIter = Range<usize>

An iterator of the coordinates. If it’s empty it’s consideret that nothing is found.

fn locate<R>(&mut self, records: R) -> Self::IntoIter

where R: Records,

Search for the thing in Records, returning a list of coordinates.

impl<R> Object for Columns<R>

where R: RangeBounds<usize>,

type Iter = ColumnsIter

An Iterator which returns a list of cells.

fn cells<T>(&self, table: &Table<T>) -> Self::Iter

where T: Records,

Cells returns a set of coordinates of cells

fn and<O>(self, rhs: O) -> UnionCombination<Self, O>

where O: Object,

Combines cells. It doesn’t repeat cells.

fn not<O>(self, rhs: O) -> DiffCombination<Self, O>

where O: Object,

Excludes rhs cells from this cells.

fn intersect<O>(self, rhs: O) -> IntersectionCombination<Self, O>

where O: Object,

Returns cells which are present in both Objects only.

fn inverse(self) -> InversionCombination<Self>

Returns cells which are not present in target Object.