Struct Exact 

pub struct Exact;

Encode a given numeric value exactly using its native format.

This does not minimise or convert, so the value is written as is.

Examples

u8 is encoded to positive fixint or uint 8

use serde::Serialize;
use messagepack_serde::ser::{to_slice_with_config, Exact};

let mut buf = [0_u8;1];
to_slice_with_config(&1_u8, &mut buf, Exact).unwrap();

let expected = [1_u8]; // 1 encoded in `positive fixint`
assert_eq!(buf,expected);

u16 is encoded to uint 16

use serde::Serialize;
use messagepack_serde::ser::{to_slice_with_config, Exact};

let mut buf = [0_u8;3];
to_slice_with_config(&1_u16, &mut buf, Exact).unwrap();

let expected = [0xcd_u8, 0x00_u8, 1_u8]; // 1 encoded in `uint 16`
assert_eq!(buf,expected);

Trait Implementations

impl<W: IoWrite> NumEncoder<W> for Exact

fn encode_i8( v: i8, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode i8

fn encode_i16( v: i16, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode i16

fn encode_i32( v: i32, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode i32

fn encode_i64( v: i64, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode i64

fn encode_i128( v: i128, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode i128

fn encode_u8( v: u8, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode u8

fn encode_u16( v: u16, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode u16

fn encode_u32( v: u32, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode u32

fn encode_u64( v: u64, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode u64

fn encode_u128( v: u128, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode u128

fn encode_f32( v: f32, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode f32

fn encode_f64( v: f64, writer: &mut W, ) -> Result<usize, Error<<W as IoWrite>::Error>>

decide encode f64