Struct HMap 

pub struct HMap { /* private fields */ }

A type-erased type-level map (heterogeneous map keyed by strings).

Implementations

impl HMap

pub fn new() -> Self

Create an empty HMap.

pub fn insert<V: 'static>(&mut self, key: impl Into<String>, value: V)

Insert a key-value pair.

pub fn get<V: 'static>(&self, key: &str) -> Option<&V>

Look up a key and downcast.

pub fn len(&self) -> usize

Number of entries.

pub fn is_empty(&self) -> bool

Returns true if empty.

Trait Implementations

impl Default for HMap

fn default() -> Self

Returns the “default value” for a type.