envmnt
pub fn is_all_exists<K: AsRef<OsStr>>(keys: &Vec<K>) -> bool
Returns true if all of environment variables are defined.
keys
extern crate envmnt; fn main() { let found = envmnt::is_all_exists(&vec![ "ENV_VAR1", "ENV_VAR2", ]); println!("All Found: {}", &found); }