pub fn one_of<T, I>(tokens: T) -> OneOf<T, I>where
T: Clone + IntoIterator,
I: Stream,
I::Item: PartialEq<T::Item>,
Expand description
Extract one token and succeeds if it is part of tokens
.
let result = many(one_of("abc".chars()))
.parse("abd");
assert_eq!(result, Ok((String::from("ab"), "d")));