Constructs an empty table with at least `n` buckets, using `hf` as the hash function, the default key equality predicate and `a` as the allocator.
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, the default key equality predicate and `a` as the allocator.构造一个至少包含 `n` 个桶的空容器，以 `hf` 作为哈希函数，使用默认键相等谓词，并以 `a` 作为分配器。
admin
Constructs an empty table with at least `n` buckets, using `hf` as the hash function, the default key equality predicate and `a` as the allocator.构造一个至少包含 `n` 个桶的空容器，以 `hf` 作为哈希函数，使用默认键相等谓词，并以 `a` 作为分配器。