Method insert

cranelift/isle/isle/src/stablemapset.rs:23–25

Adds a value to the set. Returns whether the value was newly inserted.

(&mut self, val: T)

impl<T: Hash + Eq> StableSet<T> {
    /// Adds a value to the set. Returns whether the value was newly inserted.
    pub fn insert(&mut self, val: T) -> bool {
        self.0.insert(val)
    }

    /// Returns true if the set contains a value.
    pub fn contains(&self, val: &T) -> bool {