pub trait Props {
// Required method
fn for_each<'kv, F>(&'kv self, for_each: F) -> ControlFlow<()>
where F: FnMut(Str<'kv>, Value<'kv>) -> ControlFlow<()>;
// Provided methods
fn get<'v, K>(&'v self, key: K) -> Option<Value<'v>>
where K: ToStr { ... }
fn pull<'kv, V, K>(&'kv self, key: K) -> Option<V>
where V: FromValue<'kv>,
K: ToStr { ... }
fn is_unique(&self) -> bool { ... }
fn and_props<U>(self, other: U) -> And<Self, U>
where U: Props,
Self: Sized { ... }
fn as_map(&self) -> &AsMap<Self>
where Self: Sized { ... }
fn dedup(&self) -> &Dedup<Self>
where Self: Sized { ... }
}Expand description
A collection of Str and Value pairs.
The Props::for_each method can be used to enumerate properties.
§Uniqueness
Properties may be duplicated in a set of Props. When a property is duplicated, the first for a given key is the one to use.
§Typed and untyped properties
The Props::get method will return a property as an untyped Value that can be formatted or serialized. If you’re looking for a specific type, you can use Props::pull instead.
Required Methods§
Sourcefn for_each<'kv, F>(&'kv self, for_each: F) -> ControlFlow<()>
fn for_each<'kv, F>(&'kv self, for_each: F) -> ControlFlow<()>
Provided Methods§
Sourcefn get<'v, K>(&'v self, key: K) -> Option<Value<'v>>where
K: ToStr,
fn get<'v, K>(&'v self, key: K) -> Option<Value<'v>>where
K: ToStr,
Get the value for a given key, if it’s present.
If the key is present then this method will return Some. Otherwise this method will return None.
If the key appears multiple times, the first value seen should be returned.
Implementors are encouraged to override this method with a more efficient implementation.
Sourcefn pull<'kv, V, K>(&'kv self, key: K) -> Option<V>
fn pull<'kv, V, K>(&'kv self, key: K) -> Option<V>
Get the value for a given key, if it’s present as an instance of V.
If the key is present, and the raw value can be converted into V through Value::cast then this method will return Some. Otherwise this method will return None.
If the key appears multiple times, the first value seen should be returned.
Sourcefn is_unique(&self) -> bool
fn is_unique(&self) -> bool
Whether the collection is known not to contain any duplicate keys.
If there’s any possibility a key may be duplicated, this method should return false.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.