Struct Then

pub struct Then<C, D>(/* private fields */);

A comparator that [lexicographically] (https://en.wikipedia.org/wiki/Lexicographical_order) combines two others.

See Compare::then for an example.

Trait Implementations

impl<C: Clone, D: Clone> Clone for Then<C, D>

fn clone(&self) -> Then<C, D>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<C, D, L: ?Sized, R: ?Sized> Compare<L, R> for Then<C, D>

where C: Compare<L, R>, D: Compare<L, R>,

fn compare(&self, l: &L, r: &R) -> Ordering

Compares two values, returning Less, Equal, or Greater if l is less than, equal to, or greater than r, respectively.

fn compares_lt(&self, l: &L, r: &R) -> bool

Checks if l is less than r.

fn compares_le(&self, l: &L, r: &R) -> bool

Checks if l is less than or equal to r.

fn compares_ge(&self, l: &L, r: &R) -> bool

Checks if l is greater than or equal to r.

fn compares_gt(&self, l: &L, r: &R) -> bool

Checks if l is greater than r.

fn compares_eq(&self, l: &L, r: &R) -> bool

Checks if l is equal to r.

fn compares_ne(&self, l: &L, r: &R) -> bool

Checks if l is not equal to r.

fn borrowing(self) -> Borrowing<Self, L, R>

where Self: Sized,

Borrows the comparator’s parameters before comparing them.

fn rev(self) -> Rev<Self>

where Self: Sized,

Reverses the ordering of the comparator.

fn swap(self) -> Swap<Self>

where Self: Sized,

Swaps the comparator’s parameters, maintaining the underlying ordering.

fn then<D>(self, then: D) -> Then<Self, D>

where D: Compare<L, R>, Self: Sized,

Lexicographically combines the comparator with another.

impl<C: Debug, D: Debug> Debug for Then<C, D>

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

Formats the value using the given formatter.

impl<C: Default, D: Default> Default for Then<C, D>

fn default() -> Then<C, D>

Returns the “default value” for a type.

impl<C: PartialEq, D: PartialEq> PartialEq for Then<C, D>

fn eq(&self, other: &Then<C, D>) -> 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<C: Copy, D: Copy> Copy for Then<C, D>

impl<C: Eq, D: Eq> Eq for Then<C, D>

impl<C, D> StructuralPartialEq for Then<C, D>