pub fn space0<T, E>(input: T) -> Result<(T, T), Err<E>>where
    E: ParseError<T>,
    T: InputTakeAtPosition,
    <T as InputTakeAtPosition>::Item: AsChar + Clone,
Available on crate feature mtls only.
Expand description

Recognizes zero or more spaces and tabs.

Complete version: Will return the whole input if no terminating token is found (a non space character).


fn parser(input: &str) -> IResult<&str, &str> {

assert_eq!(parser(" \t21c"), Ok(("21c", " \t")));
assert_eq!(parser("Z21c"), Ok(("Z21c", "")));
assert_eq!(parser(""), Ok(("", "")));