Enum ColOrCols 

pub enum ColOrCols<'a> {
    Col(ColId),
    ColList(&'a ColList),
}

A borrowed list of columns or a single one.

Variants

Col(ColId)

A single column.

ColList(&'a ColList)

A list of columns.

Implementations

impl ColOrCols<'_>

pub fn as_singleton(&self) -> Option<ColId>

Returns Some(col) iff self is singleton.

pub fn iter(&self) -> impl '_ + Iterator<Item = ColId>

Returns an iterator over all the columns in this list.

pub fn len(&self) -> u16

Returns the length of this list.

pub fn is_empty(&self) -> bool

Returns whether the list is empty.

pub fn to_owned(self) -> ColList

Converts to a ColList.

Trait Implementations

impl From<ColOrCols<'_>> for ColSet

fn from(value: ColOrCols<'_>) -> Self

Converts to this type from the input type.

impl Ord for ColOrCols<'_>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq<ColList> for ColOrCols<'_>

fn eq(&self, other: &ColList) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialEq for ColOrCols<'_>

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ColOrCols<'_>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for ColOrCols<'_>