Type Alias OrDefault 

pub type OrDefault<T, D = T> = Either<T, Insert<D>>;

Tries to parse a T or inserts a D when that fails.

Example

let mut token_iter = "foo".to_token_iter();

let parsed = <OrDefault<u32, Question>>::parser(&mut token_iter).unwrap();
assert_tokens_eq!(parsed, "?");

Aliased Type

pub enum OrDefault<T, D = T> {
    First(T),
    Second(Insert<D>),
    Third(Invalid),
    Fourth(Invalid),
}

Variants

First(T)

The first alternative

Second(Insert<D>)

The second alternative

Third(Invalid)

The third alternative

Fourth(Invalid)

The fourth alternative