Struct Const 

pub struct Const<'a, R, A>(pub R, pub PhantomData<&'a A>);

The Const functor.

Const<R, A> stores a value of type R and ignores the type A.

Type Parameters

• 'a: The lifetime of the values.
• R: The stored type.
• A: The ignored type.

Tuple Fields

0: R

1: PhantomData<&'a A>

Implementations

impl<'a, R, A> Const<'a, R, A>

Type Parameters

• 'a: The lifetime of the values.
• R: The stored type.
• A: The ignored type.

pub fn new(r: R) -> Self

Creates a new Const instance.

Type Signature

forall R A. R -> Const R A

Parameters

• r: The value to store.

Returns

A new Const instance.

Examples

use fp_library::types::const_val::Const;

let c: Const<i32, String> = Const::new(42);
assert_eq!(c.0, 42);

Trait Implementations

impl<'a, R: Clone, A> Clone for Const<'a, R, A>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, R: Debug, A: Debug> Debug for Const<'a, R, A>

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

Formats the value using the given formatter.

impl<'a, R: Default, A: Default> Default for Const<'a, R, A>

fn default() -> Const<'a, R, A>

Returns the “default value” for a type.

impl<'a, R: Hash, A: Hash> Hash for Const<'a, R, A>

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<'a, R: Ord, A: Ord> Ord for Const<'a, R, A>

fn cmp(&self, other: &Const<'a, R, A>) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl<'a, R: PartialEq, A: PartialEq> PartialEq for Const<'a, R, A>

fn eq(&self, other: &Const<'a, R, A>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl<'a, R: PartialOrd, A: PartialOrd> PartialOrd for Const<'a, R, A>

fn partial_cmp(&self, other: &Const<'a, R, A>) -> Option<Ordering>

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl<'a, R: Copy, A> Copy for Const<'a, R, A>

impl<'a, R: Eq, A: Eq> Eq for Const<'a, R, A>

impl<'a, R, A> StructuralPartialEq for Const<'a, R, A>