Enum frunk::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 CNil where
    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<Choices> CoproductSubsetter<CNil, HNil> for Choices

type Remainder = Choices

fn subset(
    self
) -> Result<CNil, <Choices as CoproductSubsetter<CNil, HNil>>::Remainder>

Extract a subset of the possible types in a coproduct (or get the remaining possibilities)

impl Copy for CNil

impl Debug for CNil

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

Formats the value using the given formatter.

impl Eq for CNil

impl Hash for CNil

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

Feeds this value into the given [Hasher].

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

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) -> Self

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

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 ==.

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

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.

#[must_use] fn lt(&self, other: &Rhs) -> bool

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

#[must_use] fn le(&self, other: &Rhs) -> bool

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

#[must_use] fn gt(&self, other: &Rhs) -> bool

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

#[must_use] 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 CNil

impl StructuralPartialEq for CNil

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