pub type TryFromFn = for<'src, 'mem, 'shape> unsafe fn(source: PtrConst<'src>, source_shape: &'static Shape, target: PtrUninit<'mem>) -> Result<PtrMut<'mem>, TryFromError>;
Function to try converting from another type
The target parameter has the correct layout and alignment, but points to uninitialized memory. If this function succeeds, it should return Ok with the same pointer wrapped in an PtrMut. If conversion fails, it returns Err with an error.
target
Ok
PtrMut
Err