Struct OwnedProps 

pub struct OwnedProps { /* private fields */ }

A set of owned Props.

Properties are deduplicated, but the original iteration order is retained. If the collection is created from OwnedProps::collect_shared then cloning is also cheap.

Implementation details

Internally, OwnedProps is backed by a hashtable to make key lookup efficient. Each entry in the table also forms a linked list in iteration order. The hash algorithm used is FNV-1a.

Implementations

impl OwnedProps

pub fn collect_owned(props: impl Props) -> OwnedProps

Collect a set of Props into an owned collection.

Cloning will involve cloning the collection.

pub fn collect_shared(props: impl Props) -> OwnedProps

Collect a set of Props into an owned collection.

Cloning will involve cloning the Arc, which may be cheaper than cloning the collection itself.

pub fn to_shared(&self) -> OwnedProps

Get a new collection, taking an owned copy of the data in this one.

If the collection already contains an Arc value then this method is a cheap referenced counted clone.

Trait Implementations

impl Clone for OwnedProps

fn clone(&self) -> OwnedProps

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Drop for OwnedProps

fn drop(&mut self)

Executes the destructor for this type.

impl<'kv> FromProps<'kv> for OwnedProps

fn from_props<P>(props: &'kv P) -> OwnedProps

where P: Props + ?Sized,

Convert from P.

impl Props for OwnedProps

fn for_each<'kv, F>(&'kv self, for_each: F) -> ControlFlow<()>

where F: FnMut(Str<'kv>, Value<'kv>) -> ControlFlow<()>,

Enumerate the Str and Value pairs.

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.

fn is_unique(&self) -> bool

Whether the collection is known not to contain any duplicate keys.

fn size(&self) -> Option<usize>

A hint on the number of properties in the collection.

fn pull<'kv, V, K>(&'kv self, key: K) -> Option<V>

where V: FromValue<'kv>, K: ToStr,

Get the value for a given key, if it’s present as an instance of V.

fn and_props<U>(self, other: U) -> And<Self, U>

where U: Props, Self: Sized,

Concatenate other to the end of self.

fn filter<F>(self, filter: F) -> Filter<Self, F>

where F: Fn(Str<'_>, Value<'_>) -> bool, Self: Sized,

Filter the set of properties.

fn collect<'kv, C>(&'kv self) -> C

where C: FromProps<'kv>,

Collect these properties into another collection type.

fn as_map(&self) -> &AsMap<Self>

where Self: Sized,

Get an adapter that will serialize properties as a map.

fn dedup(&self) -> &Dedup<Self>

where Self: Sized,

Lazily de-duplicate properties in the collection.

impl Send for OwnedProps

impl Sync for OwnedProps