extern crate flate2; use flate2::read::DeflateEncoder; use flate2::Compression; use std::io; use std::io::prelude::*; // Print the Deflate compressed representation of hello world fn main() { println!("{:?}", deflateencoder_read_hello_world().unwrap()); } // Return a vector containing the Defalte compressed version of hello world fn deflateencoder_read_hello_world() -> io::Result> { let mut ret_vec = [0; 100]; let c = b"hello world"; let mut deflater = DeflateEncoder::new(&c[..], Compression::fast()); let count = deflater.read(&mut ret_vec)?; Ok(ret_vec[0..count].to_vec()) }