Struct objc2::runtime::Sel

pub struct Sel { /* private fields */ }

A method selector.

The Rust equivalent of Objective-C’s SEL type. You can create this statically using the sel! macro.

The main reason the Objective-C runtime uses a custom type for selectors, as opposed to a plain c-string, is to support efficient comparison - a a selector is effectively an interned string, so this makes equiality comparisons very cheap.

This struct guarantees the null-pointer optimization, namely that Option<Sel> is the same size as Sel.

Implementations

impl Sel

pub const fn as_ptr(&self) -> *const objc_selector

Get a pointer to the raw selector.

Useful when working with raw FFI methods.

pub fn register(name: &str) -> Self

Registers a selector with the Objective-C runtime.

This is the dynamic version of the sel! macro, prefer to use that when your selector is static.

Panics

Panics if name contains an internal NUL byte, or if the runtime failed allocating space for the selector.

pub fn name(&self) -> &str

Returns the string representation of the selector.

Panics

Panics if the selector is not valid UTF-8 (however unlikely!)

Trait Implementations

impl Clone for Sel

fn clone(&self) -> Sel

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Sel

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

Formats the value using the given formatter.

impl Display for Sel

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

Formats the value using the given formatter.

impl Encode for Sel

const ENCODING: Encoding = Encoding::Sel

The Objective-C type-encoding for this type.

impl Hash for Sel

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Sel

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Pointer for Sel

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

Formats the value using the given formatter.

impl Copy for Sel

impl Eq for Sel

impl OptionEncode for Sel

impl RefUnwindSafe for Sel

impl Send for Sel

impl Sync for Sel

impl UnwindSafe for Sel