Function std::env::remove_varStable
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[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());