Struct SV 

pub struct SV<T> { /* private fields */ }

一个具有内部可变性的单值容器

Implementations

impl<T> SingleValue<T>

pub fn new(value: T) -> Self

pub fn empty() -> Self

pub fn set(&self, value: T)

pub fn get(&self) -> Option<&T>

pub fn take(&self) -> Option<T>

Trait Implementations

impl<T: Debug> Debug for SingleValue<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for SingleValue<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, T> Deserialize<'de> for SingleValue<T>

where T: Deserialize<'de> + Default,

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Display> Display for SingleValue<T>

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

Formats the value using the given formatter.

impl From<&str> for SingleValue<String>

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<String> for SingleValue<String>

fn from(value: String) -> Self

Converts to this type from the input type.

impl<T: Serialize> Serialize for SingleValue<T>

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Send> Send for SingleValue<T>

impl<T: Send> Sync for SingleValue<T>