How to create a TOML file from Rust? -

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i have collected data vector , need create toml file data. have managed create , open file:

let mut file = try!(file::create("servers.toml"));

my vector<(string,(string, u32))> contains following data, should in toml.

[server.a] ipaddr="192.168.4.1" port no=4476  [server.b] ......

i have lot of data needs written in toml , know toml text file. how encoder used for?

this uses toml crate structure , serialization. main benefit values should escaped.

extern crate toml;  use toml::value; use std::collections::btreemap; use std::io::prelude::*;  fn to_toml(v: vec<(string, (string, u32))>) -> value {     let mut servers = btreemap::new();     (name, (ip_addr, port)) in v {         let mut server = btreemap::new();         server.insert("ipaddr".into(), value::string(ip_addr));         server.insert("port no".into(), value::integer(port i64));         servers.insert(name, value::table(server));     }      let mut map = btreemap::new();     map.insert("server".into(), value::table(servers));     value::table(map) }  fn main() {     let v = vec![("a".into(), ("192.168.4.1".into(), 4476)),                  ("b".into(), ("192.168.4.8".into(), 1234))];      let toml_string = toml::encode_str(&to_toml(v));     println!("{}", toml_string);      let mut file = std::fs::file::create("servers.toml").unwrap();     file.write_all(toml_string.as_bytes()).expect("could not write file!"); }

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