# Function nom::character::streaming::hex_digit1

source · [−]

    pub fn hex_digit1<T, E: ParseError<T>>(input: T) -> IResult<T, T, E> where
        T: InputTakeAtPosition,
        <T as InputTakeAtPosition>::Item: AsChar,

Expand description

Recognizes one or more ASCII hexadecimal numerical characters: 0-9, A-F, a-f

Streaming version: Will return `Err(nom::Err::Incomplete(_))` if there’s not enough input data, or if no terminating token is found (a non hexadecimal digit character).

## Example

    assert_eq!(hex_digit1::<_, (_, ErrorKind)>("21cZ"), Ok(("Z", "21c")));
    assert_eq!(hex_digit1::<_, (_, ErrorKind)>("H2"), Err(Err::Error(("H2", ErrorKind::HexDigit))));
    assert_eq!(hex_digit1::<_, (_, ErrorKind)>(""), Err(Err::Incomplete(Needed::new(1))));