use std::env;
pub struct Environment;
impl Environment {
pub fn string_or_default(
env_name: &str,
default: &str,
) -> String {
env::var(env_name).unwrap_or(String::from(default))
}
pub fn u64_or_default(
env_name: &str,
default: u64,
) -> u64 {
env::var(env_name).ok().map(|env| env.parse::<u64>().unwrap_or(default)).unwrap_or(default)
}
}