Method insert

cranelift/codegen/src/ctxhash.rs:87–103

Insert a new key-value pair, returning the old value associated with this key (if any).

(&mut self, k: K, v: V, ctx: &Ctx)

    /// Insert a new key-value pair, returning the old value associated
    /// with this key (if any).
    pub fn insert<Ctx>(&mut self, k: K, v: V, ctx: &Ctx) -> Option<V>
    where
        Ctx: CtxEq<K, K> + CtxHash<K>,
    {
        let hash = compute_hash(ctx, &k);
        match self.raw.find_mut(hash as u64, |bucket| {
            hash == bucket.hash && ctx.ctx_eq(&bucket.k, &k)
        }) {
            Some(bucket) => Some(core::mem::replace(&mut bucket.v, v)),
            None => {
                let data = BucketData { hash, k, v };
                self.raw
                    .insert_unique(hash as u64, data, |bucket| bucket.hash as u64);
                None
            }
        }
    }

    /// Look up a key, returning a borrow of the value if present.
    pub fn get<'a, Q, Ctx>(&'a self, k: &Q, ctx: &Ctx) -> Option<&'a V>