pub fn from_str<'de, T>(s: &'de str) -> Result<T, Error> where
    T: Deserialize<'de>, Expand description
Deserializes a string into a type.
This function will attempt to interpret s as a TOML document and
deserialize T from the document.
Examples
use serde_derive::Deserialize;
#[derive(Deserialize)]
struct Config {
    title: String,
    owner: Owner,
}
#[derive(Deserialize)]
struct Owner {
    name: String,
}
let config: Config = toml::from_str(r#"
    title = 'TOML Example'
    [owner]
    name = 'Lisa'
"#).unwrap();
assert_eq!(config.title, "TOML Example");
assert_eq!(config.owner.name, "Lisa");