Struct `SetValZST`

pub(in ::collections::btree) 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

`impl Debug for SetValZST`

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

`impl Default for SetValZST`

fn default() -> SetValZST

`impl Eq for SetValZST`

fn assert_fields_are_eq(&self)

`impl Hash for SetValZST`

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

`impl IsSetVal for SetValZST`

fn is_set_val() -> bool

`impl Ord for SetValZST`

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

`impl PartialEq for SetValZST`

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

`impl PartialOrd for SetValZST`

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

`impl StructuralPartialEq for SetValZST`

Auto Trait Implementations

`impl Freeze for SetValZST`

`impl RefUnwindSafe for SetValZST`

`impl Send for SetValZST`

`impl Sync for SetValZST`

`impl Unpin for SetValZST`

`impl UnsafeUnpin for SetValZST`

`impl UnwindSafe for SetValZST`

Blanket Implementations

`impl<T> Any for SetValZST where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for SetValZST where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for SetValZST where T: ?Sized,`

fn borrow_mut(&mut self) -> &mut T

`impl<T> CloneToUninit for SetValZST where T: Clone,`

unsafe fn clone_to_uninit(&self, dest: *mut u8)

`impl<T> From<T> for SetValZST`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> SizeHint for SetValZST where T: ?Sized,`

fn lower_bound(&self) -> usize
fn upper_bound(&self) -> Option<usize>

`impl<T> SizedTypeProperties for SetValZST`

`impl<T> ToOwned for SetValZST where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into for SetValZST where U: From<T>,`

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for SetValZST where U: Into<T>,`

type Error = Infallible;
fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

`impl<T, U> TryInto for SetValZST where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>