Method push

src/entity/primary_map.rs:144–148

(&mut self, v: V)

    /// Append `v` to the mapping, assigning a new key which is returned.
    #[inline]
    pub fn push(&mut self, v: V) -> K {
        let k = self.next_key();
        self.elems.push(v);
        k
    }

    /// Appends multiple values from the given iterator, returning a range of
    /// keys for the newly added elements.