Struct Session 

pub struct Session { /* private fields */ }

Per-request session bag: typed values under string keys, plus a dirty flag so the store can skip a write when nothing changed.

Implementations

impl Session

pub fn new() -> Self

pub fn get<T: DeserializeOwned>(&self, key: &str) -> Option<T>

Read a typed value. None when the key is missing or the stored value is not a T.

pub fn set<T: Serialize>(&mut self, key: impl Into<String>, value: T)

Store a value and mark the session dirty.

pub fn remove(&mut self, key: &str) -> Option<Value>

Remove a key and return its old value, if there was one.

pub fn clear(&mut self)

Remove every key and mark the session dirty.

pub fn is_dirty(&self) -> bool

true when something was set, removed or cleared since the last load or save.

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn keys(&self) -> impl Iterator<Item = &String>

Trait Implementations

impl Clone for Session

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Session

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

Formats the value using the given formatter.

impl Default for Session

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Session

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Session

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.