Function std::env::remove_varStable [-] [+] [src]

pub fn remove_var<K: ?Sized>(k: &K) where K: AsRef<OsStr>

Removes an environment variable from the environment of the currently running process.

Examples

extern crate std; fn main() { use std::env; let key = "KEY"; env::set_var(key, "VALUE"); assert_eq!(env::var(key), Ok("VALUE".to_string())); env::remove_var(key); assert!(env::var(key).is_err()); }
use std::env;

let key = "KEY";
env::set_var(key, "VALUE");
assert_eq!(env::var(key), Ok("VALUE".to_string()));

env::remove_var(key);
assert!(env::var(key).is_err());