Function get 

pub fn get<K: AsRef<OsStr>, T: FromStr>(key: K) -> T

Get the value of the environment variable key as T. If the variable is not set or cannot be parsed, it panics with a message.

Example

use std::env;
use std::str::FromStr;
use better_config_core::utils::env::get;

env::set_var("MY_ENV_VAR", "42");
let value: u32 = get("MY_ENV_VAR");
println!("Value: {}", value);