Struct Subject 

pub struct Subject {
    pub id: String,
    pub attrs: HashMap<String, Value>,
}

The entity a flag is being evaluated for. id is the only required field and is used as the sticky-bucketing key. Arbitrary string-keyed attributes (country, plan, email, …) are supported by the crate::Predicate DSL.

Fields

id: String

Stable identifier for sticky bucketing. Usually a user/tenant/device id.

attrs: HashMap<String, Value>

Free-form string attributes for targeting ({"country": "US", ...}).

Implementations

impl Subject

pub fn new<S: Into<String>>(id: S) -> Self

Build a new subject with the given id.

pub fn with_attr<K, V>(self, key: K, value: V) -> Self

where K: Into<String>, V: Into<Value>,

Builder helper: attach an attribute and return self.

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

Look up an attribute by name.

Trait Implementations

impl Clone for Subject

fn clone(&self) -> Subject

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Subject

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

Formats the value using the given formatter.

impl Default for Subject

fn default() -> Subject

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Subject

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Subject

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

where __S: Serializer,

Serialize this value into the given Serde serializer.