pub struct DynArg<T: ?Sized>(/* private fields */);Expand description
A pointer to data which was forgotten (not dropped but no active references). This is a stand-in replacement for a dynamically-sized argument: your function consumes this value and copy out the data, instead of consuming the unsized argument directly.
Implementations§
Source§impl<T: ?Sized> DynArg<T>
impl<T: ?Sized> DynArg<T>
Sourcepub unsafe fn from_raw(x: *const T) -> Self
pub unsafe fn from_raw(x: *const T) -> Self
SAFETY: You must never use x again after you pass it to this function,
you must ensure that x is never dropped,
and you must ensure that x is not deallocated until after this DynArg is.
pub fn as_ptr(&self) -> *const T
pub fn size(&self) -> usize
pub fn align(&self) -> usize
pub fn metadata(&self) -> <T as Pointee>::Metadata
pub unsafe fn write_into(self, dst: *mut T)
Trait Implementations§
Auto Trait Implementations§
impl<T> Freeze for DynArg<T>where
T: ?Sized,
impl<T> RefUnwindSafe for DynArg<T>where
T: RefUnwindSafe + ?Sized,
impl<T> !Send for DynArg<T>
impl<T> !Sync for DynArg<T>
impl<T> Unpin for DynArg<T>where
T: ?Sized,
impl<T> UnwindSafe for DynArg<T>where
T: RefUnwindSafe + ?Sized,
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more