2 #![allow(unused_variables)]
6 if env_var("FOOBAR").as_ref().map(Deref::deref).ok() == Some("yes") {
10 let env_home: Result<String, ()> = Ok("foo-bar-baz".to_string());
11 let env_home = env_home.as_ref().map(Deref::deref).ok();
13 if env_home == Some("") { panic!() }
17 fn env_var(s: &str) -> Result<String, VarError> {
18 Err(VarError::NotPresent)