Trait objc2::rc::DefaultId

source · [−]

pub trait DefaultId {
    type Ownership: Ownership;

    fn default_id() -> Id<Self, Self::Ownership>ⓘNotable traits for Id<I, Owned>impl<I: Iterator + ?Sized> Iterator for Id<I, Owned>    type Item = I::Item;impl<T: Read + ?Sized> Read for Id<T, Owned>impl<T: Write + ?Sized> Write for Id<T, Owned>impl<T: Future + Unpin + ?Sized> Future for Id<T, Owned>    type Output = T::Output;;
}

Expand description

Helper trait to implement Default on types whoose default value is an Id.

Required Associated Types

type Ownership: Ownership

Indicates whether the default value is mutable or immutable.

Required Methods

fn default_id() -> Id<Self, Self::Ownership>ⓘNotable traits for Id<I, Owned>`impl<I: Iterator + ?Sized> Iterator for Id<I, Owned> type Item = I::Item;impl<T: Read + ?Sized> Read for Id<T, Owned>impl<T: Write + ?Sized> Write for Id<T, Owned>impl<T: Future + Unpin + ?Sized> Future for Id<T, Owned> type Output = T::Output;`

The default Id for a type.

On most objects the implementation would just be sending a message to the new selector.

Implementors

impl DefaultId for NSAttributedString

type Ownership = Shared

impl DefaultId for NSData

type Ownership = Shared

impl DefaultId for NSMutableAttributedString

type Ownership = Owned

impl DefaultId for NSMutableData

type Ownership = Owned

impl DefaultId for NSMutableString

type Ownership = Owned

impl DefaultId for NSObject

type Ownership = Owned

impl DefaultId for NSString

type Ownership = Shared

impl DefaultId for NSUUID

type Ownership = Shared

impl<K: Message, V: Message> DefaultId for NSDictionary<K, V>

type Ownership = Shared

impl<K: Message, V: Message> DefaultId for NSMutableDictionary<K, V>

type Ownership = Owned

impl<T: Message, O: Ownership> DefaultId for NSArray<T, O>

type Ownership = Shared

impl<T: Message, O: Ownership> DefaultId for NSMutableArray<T, O>

type Ownership = Owned

impl<T: Message, O: Ownership> DefaultId for NSMutableSet<T, O>

type Ownership = Owned

impl<T: Message, O: Ownership> DefaultId for NSSet<T, O>

type Ownership = Shared