Struct TypeStoreValue 

pub struct TypeStoreValue { /* private fields */ }

A cloneable, value-based container that stores exactly one value per type.

Unlike TypeStore, TypeStoreValue does not use Arc<Mutex<>> internally, making it cloneable and suitable for single-threaded contexts or when you need to snapshot state.

Examples

use sovran_typemap::TypeStoreValue;

#[derive(Clone, Debug, PartialEq)]
struct Config {
    debug: bool,
    max_retries: u32,
}

let mut store = TypeStoreValue::new();

store.set(Config { debug: true, max_retries: 3 });
store.set(42i32);

// Clone the entire store
let snapshot = store.clone();

// Modify original
store.with_mut::<Config, _, _>(|cfg| {
    cfg.debug = false;
});

// Snapshot is unchanged
assert_eq!(snapshot.get::<Config>().unwrap().debug, true);
assert_eq!(store.get::<Config>().unwrap().debug, false);

Implementations

impl TypeStoreValue

pub fn new() -> Self

Creates a new, empty TypeStoreValue.

Examples

use sovran_typemap::TypeStoreValue;

let store = TypeStoreValue::new();
assert!(store.is_empty());

pub fn set<V>(&mut self, value: V)

where V: Clone + Any + Send + Sync,

Stores a value, using its type as the key.

If a value of this type already exists, it will be replaced.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();

store.set(42i32);
store.set("hello".to_string());

// Overwrites the previous i32
store.set(100i32);
assert_eq!(store.get::<i32>(), Some(100));

pub fn set_with<V, F>(&mut self, f: F)

where V: Clone + Any + Send + Sync, F: FnOnce() -> V,

Stores a value generated by a closure.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();

store.set_with(|| vec![1, 2, 3, 4, 5]);

assert_eq!(store.get::<Vec<i32>>(), Some(vec![1, 2, 3, 4, 5]));

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

where V: Clone + Any + Send + Sync,

Retrieves a clone of a value by its type.

Returns None if no value of this type exists.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();
store.set(42i32);

assert_eq!(store.get::<i32>(), Some(42));
assert_eq!(store.get::<String>(), None);

pub fn with<V, F, R>(&self, f: F) -> Option<R>

where V: Any, F: FnOnce(&V) -> R,

Accesses a value by type with a read-only closure.

Returns None if no value of this type exists.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();
store.set(vec![1, 2, 3, 4, 5]);

let sum = store.with::<Vec<i32>, _, _>(|numbers| {
    numbers.iter().sum::<i32>()
});
assert_eq!(sum, Some(15));

pub fn with_mut<V, F, R>(&mut self, f: F) -> Option<R>

where V: Any, F: FnOnce(&mut V) -> R,

Accesses a value by type with a read-write closure.

Returns None if no value of this type exists.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();
store.set(vec![1, 2, 3]);

store.with_mut::<Vec<i32>, _, _>(|numbers| {
    numbers.push(4);
    numbers.push(5);
});

assert_eq!(store.get::<Vec<i32>>(), Some(vec![1, 2, 3, 4, 5]));

pub fn remove<V: Any>(&mut self) -> bool

Removes a value by its type.

Returns true if a value was removed, false if no value of that type existed.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();
store.set(42i32);

assert!(store.remove::<i32>());
assert!(!store.remove::<i32>()); // Already removed

pub fn contains<V: Any>(&self) -> bool

Checks if a value of the given type exists.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();

assert!(!store.contains::<i32>());
store.set(42i32);
assert!(store.contains::<i32>());

pub fn len(&self) -> usize

Gets the number of values in the store.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();
assert_eq!(store.len(), 0);

store.set(42i32);
store.set("hello".to_string());
assert_eq!(store.len(), 2);

pub fn is_empty(&self) -> bool

Checks if the store is empty.

Examples

use sovran_typemap::TypeStoreValue;

let mut store = TypeStoreValue::new();
assert!(store.is_empty());

store.set(42i32);
assert!(!store.is_empty());

Trait Implementations

impl Clone for TypeStoreValue

fn clone(&self) -> TypeStoreValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeStoreValue

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

Formats the value using the given formatter.

impl Default for TypeStoreValue

fn default() -> TypeStoreValue

Returns the “default value” for a type.