pub enum HasArg {
Yes,
No,
Maybe,
}Describes whether an option has an argument.
Yes | The option requires an argument. |
No | The option is just a flag, therefore no argument. |
Maybe | The option argument is optional and it could or not exist. |
impl Eq for HasArgimpl Clone for HasArg
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).