[−][src]Function envmnt::is_all_exists
pub fn is_all_exists<K: AsRef<OsStr>>(keys: &Vec<K>) -> bool
Returns true if all of environment variables are defined.
Arguments
keys
- The environment variable names
Example
extern crate envmnt; fn main() { envmnt::set("ENV_VAR1", "SOME VALUE"); envmnt::set("ENV_VAR2", "SOME VALUE"); let mut found = envmnt::is_all_exists(&vec![ "ENV_VAR1", "ENV_VAR2", ]); assert!(found); envmnt::remove("ENV_VAR2"); found = envmnt::is_all_exists(&vec![ "ENV_VAR1", "ENV_VAR2", ]); assert!(!found); }