Constructs an empty table using `hasher()` as the hash function, `key_equal()` as the key equality predicate and `allocator_type()` as the allocator.
Constructs an empty table using `hasher()` as the hash function, `key_equal()` as the key equality predicate and `allocator_type()` as the allocator.使用hasher()作为哈希函数、key_equal()作为键相等谓词、allocator_type()作为分配器，构造一个空表。
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Constructs an empty table using `hasher()` as the hash function, `key_equal()` as the key equality predicate and `allocator_type()` as the allocator.使用hasher()作为哈希函数、key_equal()作为键相等谓词、allocator_type()作为分配器，构造一个空表。