```rust use bitsparrow::Encoder;
let buffer = Encoder::new() .uint8(100) .string("Foo") .end() .unwrap();
assert_eq!(buffer, vec![0x64,0x03,0x46,0x6f,0x6f]) ```
Each method on the Encoder will consume the instance of the
struct. If you need to break the monad chain, store the
intermediate state of the encoder, e.g.:
```rust use bitsparrow::Encoder;
let encoder = Encoder::new() .uint8(100);
/* * Many codes here */
let buffer = encoder.string("Foo") .end() .unwrap();
assert_eq!(buffer, vec![0x64,0x03,0x46,0x6f,0x6f]); ```
To make the monad chain feasible, Encoder will internally
store the last error (if any) that occures during the chain,
and return in on the Result of the end method.
```rust use bitsparrow::Decoder;
let buffer: Vec
asserteq!(100u8, decoder.uint8().unwrap()); asserteq!("Foo", decoder.string().unwrap()); assert_eq!(true, decoder.end()); ```
Decoder consumes the buffer and allows you to retrieve the
values in order they were encoded. Calling the end method
is optional, it will return true if you have read the entire
buffer, which can be handy if you are reading multiple
messages stacked on a single buffer.
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