Enum frunk_core::coproduct::CNil

pub enum CNil {}

Phantom type for signature purposes only (has no value)

Used by the macro to terminate the Coproduct type signature

Trait Implementations

impl Clone for CNil

fn clone(&self) -> CNil

Returns a copy of the value.

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

Performs copy-assignment from source.

impl CoproductEmbedder<CNil, HNil> for CNil

fn embed(self) -> CNil

Convert a coproduct into another that can hold its variants.

impl<Head, Tail> CoproductEmbedder<Coproduct<Head, Tail>, HNil> for CNilwhere CNil: CoproductEmbedder<Tail, HNil>,

fn embed(self) -> Coproduct<Head, Tail>

Convert a coproduct into another that can hold its variants.

impl<F, R> CoproductFoldable<F, R> for CNil

This is literally impossible; CNil is not instantiable

fn fold(self, _: F) -> R

Use functions to fold a coproduct into a single value.

impl<F> CoproductMappable<F> for CNil

Base case map impl.

type Output = CNil

fn map(self, _: F) -> Self::Output

Use functions to map each variant of a coproduct.

impl Debug for CNil

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

Formats the value using the given formatter.

impl Hash for CNil

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 Ord for CNil

fn cmp(&self, other: &CNil) -> 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<CNil> for CNil

fn eq(&self, other: &CNil) -> 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<CNil> for CNil

fn partial_cmp(&self, other: &CNil) -> 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<'a> ToMut<'a> for CNil

type Output = CNil

fn to_mut(&'a mut self) -> CNil

impl<'a> ToRef<'a> for CNil

type Output = CNil

fn to_ref(&'a self) -> CNil

impl Copy for CNil

impl Eq for CNil

impl StructuralEq for CNil

impl StructuralPartialEq for CNil