Struct ParamLogger 

pub struct ParamLogger { /* private fields */ }

Structured parameter logger for training experiments.

Stores hyperparameters, configuration flags, and other experiment metadata as typed key-value pairs. Supports JSON serialization and diff comparison.

Implementations

impl ParamLogger

pub fn new() -> Self

Create a new, empty parameter logger.

pub fn log_param(&mut self, key: &str, value: impl Into<ParamValue>)

Log a single parameter. Overwrites any existing value for the key.

pub fn log_params(&mut self, params: HashMap<String, ParamValue>)

Log multiple parameters at once. Overwrites existing values.

pub fn get_param(&self, key: &str) -> Option<&ParamValue>

Retrieve a parameter by key.

pub fn get_all_params(&self) -> &HashMap<String, ParamValue>

Retrieve all parameters as a reference to the underlying map.

pub fn len(&self) -> usize

Returns the number of logged parameters.

pub fn is_empty(&self) -> bool

Returns true if no parameters have been logged.

pub fn to_json(&self) -> String

Serialize all parameters to a JSON string.

Keys are sorted for deterministic output.

pub fn diff(&self, other: &ParamLogger) -> ParamDiff

Compute the diff between self and other.

• changed: keys present in both with different values
• added: keys in other but not in self
• removed: keys in self but not in other

Trait Implementations

impl Clone for ParamLogger

fn clone(&self) -> ParamLogger

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParamLogger

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

Formats the value using the given formatter.

impl Default for ParamLogger

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ParamLogger

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ParamLogger

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

where __S: Serializer,

Serialize this value into the given Serde serializer.