Function get_or

libs/hbb_common/src/config.rs:1947–1959

(
    a: &RwLock<HashMap<String, String>>,
    b: &HashMap<String, String>,
    c: &RwLock<HashMap<String, String>>,
    k: &str,
)

#[inline]
fn get_or(
    a: &RwLock<HashMap<String, String>>,
    b: &HashMap<String, String>,
    c: &RwLock<HashMap<String, String>>,
    k: &str,
) -> Option<String> {
    a.read()
        .unwrap()
        .get(k)
        .or(b.get(k))
        .or(c.read().unwrap().get(k))
        .cloned()
}

#[inline]
fn is_option_can_save(overwrite: &RwLock<HashMap<String, String>>, k: &str) -> bool {