Struct libreda_db::property_storage::PropertyStore

pub struct PropertyStore<K> where
    K: Hash + Eq,  { /* fields omitted */ }

Look-up table for property values.

Implementations

impl<K: Hash + Eq> PropertyStore<K>

pub fn new() -> Self

Create an empty property store.

pub fn insert<V: Into<PropertyValue>>(
    &mut self,
    key: K,
    value: V
) -> Option<PropertyValue>

Insert a property. Returns the old property value if there was already a property stored under this key.

pub fn get<Q: ?Sized>(&self, key: &Q) -> Option<&PropertyValue> where
    K: Borrow<Q>,
    Q: Eq + Hash, 

Get a property value by the property key.

pub fn contains_key<Q: ?Sized>(&self, key: &Q) -> bool where
    K: Borrow<Q>,
    Q: Eq + Hash, 

Check if the key is contained in this property store.

pub fn get_string<Q: ?Sized>(&self, key: &Q) -> Option<&RcString> where
    K: Borrow<Q>,
    Q: Eq + Hash, 

Get a string property value by key. If the property value is not a string None is returned.

Trait Implementations

impl<K: Clone> Clone for PropertyStore<K> where
    K: Hash + Eq, 

fn clone(&self) -> PropertyStore<K>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<K: Debug> Debug for PropertyStore<K> where
    K: Hash + Eq, 

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

Formats the value using the given formatter.

impl<K: Hash + Eq> Default for PropertyStore<K>

fn default() -> Self

Returns the “default value” for a type.