# i16 in nom::number::streaming - Rust
Recognizes a signed 2 byte integer
Keywords: rust, rustlang, rust-lang, i16

# Function nom::number::streaming::i16

source · [−]

    pub fn i16<I, E: ParseError<I>>(
        endian: Endianness
    ) -> fn(_: I) -> IResult<I, i16, E> where
        I: Slice<RangeFrom<usize>> + InputIter<Item = u8> + InputLength,

Expand description

Recognizes a signed 2 byte integer

If the parameter is `nom::number::Endianness::Big`, parse a big endian i16 integer, otherwise if `nom::number::Endianness::Little` parse a little endian i16 integer. Streaming version: Will return `Err(nom::Err::Incomplete(_))` if there is not enough data.

    use nom::number::streaming::i16;

    let be_i16 = |s| {
      i16::<_, (_, ErrorKind)>(nom::number::Endianness::Big)(s)
    };

    assert_eq!(be_i16(&b"\x00\x03abcefg"[..]), Ok((&b"abcefg"[..], 0x0003)));
    assert_eq!(be_i16(&b"\x01"[..]), Err(Err::Incomplete(Needed::new(1))));

    let le_i16 = |s| {
      i16::<_, (_, ErrorKind)>(nom::number::Endianness::Little)(s)
    };

    assert_eq!(le_i16(&b"\x00\x03abcefg"[..]), Ok((&b"abcefg"[..], 0x0300)));
    assert_eq!(le_i16(&b"\x01"[..]), Err(Err::Incomplete(Needed::new(1))));