Struct SortExpression 

pub struct SortExpression<T> { /* private fields */ }

One key of a sort: a value read from each item, and the direction (SortExpression<T>).

Deviation (DEVIATIONS.md, DynamicData): upstream holds the getter Func<T, IComparable>; Rust has no common type of the values of different getters, so the expression is held as the comparison of the values it reads. The values need PartialOrd; Option puts None first, as upstream puts null first, and two values without an order (a NaN) compare as equal.

Implementations

impl<T: 'static> SortExpression<T>

pub fn new<V: PartialOrd + 'static>( expression: impl Fn(&T) -> V + 'static, direction: SortDirection, ) -> Self

The key expression in direction (SortExpression(Func<T, IComparable>, SortDirection)).

pub fn ascending<V: PartialOrd + 'static>( expression: impl Fn(&T) -> V + 'static, ) -> Self

The key expression, ascending (SortExpression(Func<T, IComparable>)).

impl<T> SortExpression<T>

pub fn direction(&self) -> SortDirection

The direction (Direction).

pub fn compare_values(&self, x: &T, y: &T) -> Ordering

The comparison of the values that the expression reads from x and y, ascending (Expression(x).CompareTo(Expression(y))).

Trait Implementations

impl<T> Clone for SortExpression<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for SortExpression<T>

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

Formats the value using the given formatter.