Enum DescriptorField 

pub enum DescriptorField<T> {
    Absent,
    Present(T),
}

A descriptor field: absent, or present with a value (Present(undefined) and Absent mean different things).

Variants

Absent

Present(T)

Implementations

impl<T> DescriptorField<T>

pub fn try_map<U, E>( &self, map: impl FnOnce(&T) -> Result<U, E>, ) -> Result<DescriptorField<U>, E>

pub const fn is_absent(&self) -> bool

pub const fn is_present(&self) -> bool

pub const fn as_ref(&self) -> DescriptorField<&T>

pub fn map<U>(self, map: impl FnOnce(T) -> U) -> DescriptorField<U>

pub fn into_option(self) -> Option<T>

Trait Implementations

impl<T: Clone> Clone for DescriptorField<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Copy> Copy for DescriptorField<T>

impl<T: Debug> Debug for DescriptorField<T>

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

Formats the value using the given formatter.

impl<T> Default for DescriptorField<T>

fn default() -> Self

Returns the “default value” for a type.

impl<T: Eq> Eq for DescriptorField<T>

impl<T> From<Option<T>> for DescriptorField<T>

fn from(value: Option<T>) -> Self

Converts to this type from the input type.

impl<T: Hash> Hash for DescriptorField<T>

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<T: PartialEq> PartialEq for DescriptorField<T>

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<T: PartialEq> StructuralPartialEq for DescriptorField<T>