Struct alloc::collections::btree::set_val::SetValZST

pub struct SetValZST;

Zero-Sized Type (ZST) for internal BTreeSet values. Used instead of () to differentiate between:

• BTreeMap<T, ()> (possible user-defined map)
• BTreeMap<T, SetValZST> (internal set representation)

Trait Implementations

impl Clone for SetValZST

fn clone(&self) -> SetValZST

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SetValZST

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

Formats the value using the given formatter.

impl Default for SetValZST

fn default() -> SetValZST

Returns the “default value” for a type.

impl Eq for SetValZST

fn assert_receiver_is_total_eq(&self)

impl Hash for SetValZST

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IsSetVal for SetValZST

fn is_set_val() -> bool

impl Ord for SetValZST

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<SetValZST> for SetValZST

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd<SetValZST> for SetValZST

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl StructuralEq for SetValZST

impl StructuralPartialEq for SetValZST