std::intrinsics::needs_drop
pub extern fn needs_drop<T>() -> bool
Returns true if a type requires drop glue.
pub extern fn needs_drop<T>() -> bool
Returns true if a type requires drop glue.
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct (or str), enum,
trait, typedef (or
tdef).