Function get_or 

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

Get the value of the environment variable key as T. If the variable is not set or cannot be parsed, it returns default.

Example

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

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