Function envmnt::get_parse_or
source · [−]pub fn get_parse_or<K, T, E>(key: K, default: T) -> EnvmntResult<T> where
K: AsRef<OsStr>,
T: FromStr + FromStr<Err = E>,
E: Display,
Expand description
Returns the parsed environment variable value or if is not defined, the default value will be returned.
Arguments
key
- The environment variable namedefault
- The default value to use in case env var is not set
Example
fn main() {
envmnt::set("ENV_VAR", "123");
let value: i32 = envmnt::get_parse_or("ENV_VAR", 321).unwrap();
assert_eq!(value, 123);
let value: i32 = envmnt::get_parse_or("ENV_MISSING_VAR", 321).unwrap();
assert_eq!(value, 321);
}