Struct ConstOption 

pub struct ConstOption<T, const IS_SOME: bool>(/* private fields */);

An Option type that is known at compile-time to have or not some value. This is usefull for writing data structures that use const generics and would like to hold or not a value of some type based on a compile-time rule.

Example

struct Person<const HAS_DOG: bool> {
    name: String,
    age: usize,
    dog_name: ConstOption<String, HAS_DOG>,
}

Implementations

impl<T> ConstOption<T, false>

pub fn new() -> Self

impl<T> ConstOption<T, true>

pub fn new(val: T) -> Self

pub fn into_inner(self) -> T

Trait Implementations

impl<T> AsMut<T> for ConstOption<T, true>

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

Converts this type into a mutable reference of the (usually inferred) input type.

impl<T> AsRef<T> for ConstOption<T, true>

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

impl<T> Deref for ConstOption<T, true>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for ConstOption<T, true>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T, const IS_SOME: bool> Drop for ConstOption<T, IS_SOME>

fn drop(&mut self)

Executes the destructor for this type.