Function no_std_compat2::ptr::metadata
const: unstable · source · pub fn metadata<T>(ptr: *const T) -> <T as Pointee>::Metadatawhere
T: ?Sized,🔬This is a nightly-only experimental API. (
ptr_metadata)Available on non-crate feature
std only.Expand description
Extract the metadata component of a pointer.
Values of type *mut T, &T, or &mut T can be passed directly to this function
as they implicitly coerce to *const T.
Example
#![feature(ptr_metadata)]
assert_eq!(std::ptr::metadata("foo"), 3_usize);