Struct block_sys::Block_byref

source ·
#[repr(C)]
pub struct Block_byref { pub header: Block_byref_header, pub keep: Option<unsafe extern "C" fn(dst: *mut c_void, src: *mut c_void)>, pub destroy: Option<unsafe extern "C" fn(src: *mut c_void)>, }
Expand description

Structure used for on-stack variables that are referenced by blocks.

requires BLOCK_BYREF_HAS_COPY_DISPOSE

Fields§

§header: Block_byref_header§keep: Option<unsafe extern "C" fn(dst: *mut c_void, src: *mut c_void)>

Copy function.

§destroy: Option<unsafe extern "C" fn(src: *mut c_void)>

Dispose function.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.