Struct block::RcBlock

pub struct RcBlock<A, R> { /* fields omitted */ }

A reference-counted Objective-C block.

Methods

impl<A, R> RcBlock<A, R>

pub unsafe fn new(ptr: *mut Block<A, R>) -> Self

Construct an RcBlock for the given block without copying it. The caller must ensure the block has a +1 reference count.

Unsafe because ptr must point to a valid Block and must have a +1 reference count or it will be overreleased when the RcBlock is dropped.

pub unsafe fn copy(ptr: *mut Block<A, R>) -> Self

Constructs an RcBlock by copying the given block.

Unsafe because ptr must point to a valid Block.

Methods from Deref<Target = Block<A, R>>

pub unsafe fn call(&self, args: A) -> R

Call self with the given arguments.

Unsafe because this invokes foreign code that the caller must verify doesn't violate any of Rust's safety rules. For example, if this block is shared with multiple references, the caller must ensure that calling it will not cause a data race.

Trait Implementations

impl<A, R> Clone for RcBlock<A, R>

fn clone(&self) -> RcBlock<A, R>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<A, R> Drop for RcBlock<A, R>

fn drop(&mut self)

Executes the destructor for this type.

impl<A, R> Deref for RcBlock<A, R>

type Target = Block<A, R>

The resulting type after dereferencing.

fn deref(&self) -> &Block<A, R>

Dereferences the value.