1.0.0[−][src]Function std::env::var
pub fn var<K: AsRef<OsStr>>(key: K) -> Result<String, VarError>
Fetches the environment variable key
from the current process.
Errors
- Environment variable is not present
- Environment variable is not valid unicode
Examples
use std::env; let key = "HOME"; match env::var(key) { Ok(val) => println!("{}: {:?}", key, val), Err(e) => println!("couldn't interpret {}: {}", key, e), }Run