From 7e8ee5ed9cad6484e9f13f81731b102ced58402e Mon Sep 17 00:00:00 2001 From: Adam Carpenter Date: Tue, 9 Jul 2019 15:14:04 -0400 Subject: Init. --- meap/ch7/src/main.rs | 100 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100755 meap/ch7/src/main.rs (limited to 'meap/ch7/src') diff --git a/meap/ch7/src/main.rs b/meap/ch7/src/main.rs new file mode 100755 index 0000000..1dbb471 --- /dev/null +++ b/meap/ch7/src/main.rs @@ -0,0 +1,100 @@ +//#[macro_use] +//extern crate serde_derive; +// +//extern crate serde; +//extern crate serde_json; +//extern crate bincode; +// +//#[derive(Serialize, Deserialize)] +//struct City { +// name: String, +// population: usize, +// latitude: f64, +// longitude: f64, +//} +// +//fn main() { +// let calabar = City { +// name: String::from("Calabar"), +// population: 470_000, +// latitude: 4.95, +// longitude: 8.33, +// }; +// +// let as_json = serde_json::to_string(&calabar).unwrap(); +// let as_bincode = bincode::serialize(&calabar).unwrap(); +// +// println!("json: {}", &as_json); +// println!("bincode: {:?}", &as_bincode); +// println!("bincode utf8: {:?}", String::from_utf8_lossy(&as_bincode)); +//} + + +//use std::io::prelude::*; +// +//const BYTES_PER_LINE: usize = 16; +//const INPUT: &'static [u8] = br#" +// +//fn main() { +// println!("hello world") +//}"#; +// +//fn main() -> std::io::Result<()> { +// let mut buffer: Vec = vec!(); +// INPUT.read_to_end(&mut buffer)?; +// +// let mut position_in_input = 0; +// +// for line in buffer.chunks(BYTES_PER_LINE) { +// print!("[0x{:08x}] ", position_in_input); +// +// for byte in line { +// print!("{:02x} ", byte); +// } +// +// println!(); +// position_in_input += BYTES_PER_LINE; +// } +// +// Ok(()) +//} + + +//use std::fs::File; +//use std::io::prelude::*; +//use std::env; +// +//const BYTES_PER_LINE: usize = 16; +// +//fn main() { +// let arg1 = env::args().nth(1); +// let fname = arg1.expect("usage: fview FILENAME"); +// +// let mut f = File::open(&fname).expect("unable to open file"); +// let mut pos = 0; +// let mut buffer = [0; BYTES_PER_LINE]; +// +// while let Ok(_) = f.read_exact(&mut buffer) { +// print!("[0x{:08x}] ", pos); +// +// for byte in &buffer { +// match *byte { +// 0x00 => print!(". "), +// 0xff => print!("## "), +// _ => print!("{:02x} ", byte), +// } +// } +// +// println!(""); +// pos += BYTES_PER_LINE; +// } +//} + + +use std::path::PathBuf; + +fn main() { + let mut hello = PathBuf::from("/tmp/hello.txt"); + hello.pop(); + println!("{:?}", hello.display()); +} -- cgit v1.2.3