Method from_iter

cranelift/entity/src/map.rs:245–254

(iter: T)

    V: Clone + Default,
{
    fn from_iter<T: IntoIterator<Item = (K, V)>>(iter: T) -> Self {
        let iter = iter.into_iter();
        let (min, max) = iter.size_hint();
        let cap = max.unwrap_or_else(|| 2 * min);
        let mut map = Self::with_capacity(cap);
        for (k, v) in iter {
            map[k] = v;
        }
        map
    }
}

/// Immutable indexing into an `SecondaryMap`.