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 PartialEq for CNil

fn eq(&self, __arg_0: &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 !=.

impl Debug for CNil

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Eq for CNil

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 Copy for CNil

impl PartialOrd for CNil

fn partial_cmp(&self, __arg_0: &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 Ord for CNil

fn cmp(&self, __arg_0: &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.

impl Hash for CNil

fn hash<__H: Hasher>(&self, __arg_0: &mut __H)

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

type Output = CNil

fn to_ref(&'a self) -> CNil

impl<Choices> CoproductSubsetter<CNil, HNil> for Choices

type Remainder = Self

fn subset(self) -> Result<CNil, Self::Remainder>

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

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.