Miscellaneous helpers for common patterns.
| NonCopyable | A non-copyable dummy type. |
| Void | A type with no inhabitants |
| id | The identity function. |
| ignore | Ignores a value. |
| replace | Replace the value at a mutable location with a new one, returning the old value, without deinitialising or copying either one. |
| swap | Swap the values at two mutable locations of the same type, without deinitialising or copying either one. |
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).