Enum Maybe

pub enum Maybe<T> {
    Value(T),
    Nothing,
}

Variants

Value(T)

Nothing

Implementations

impl<T> Maybe<T>

pub fn value(value: T) -> Self

pub fn update<S>(&mut self, value: S)

where S: Into<T>,

pub fn unwrap(self) -> T

Trait Implementations

impl<T: Clone> Clone for Maybe<T>

fn clone(&self) -> Maybe<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Maybe<T>

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

Formats the value using the given formatter.

impl<T> Default for Maybe<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'a, T> From<&'a str> for Maybe<T>

where T: From<&'a str>,

fn from(value: &'a str) -> Self

Converts to this type from the input type.

impl<D> From<Label<D>> for Maybe<Label<D>>

where D: Dimension,

fn from(value: Label<D>) -> Self

Converts to this type from the input type.

impl<T> GnuCommandFactory for Maybe<T>

where T: GnuCommandFactory,

fn as_commands(&self) -> GnuCommandFactoryResult

impl<T: PartialEq> PartialEq for Maybe<T>

fn eq(&self, other: &Maybe<T>) -> 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<T: Copy> Copy for Maybe<T>

impl<T: Eq> Eq for Maybe<T>

impl<T> StructuralPartialEq for Maybe<T>