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Hashmap.has() method

Checks if the hash map contains a value for the key.

判断在哈希表中是否有该键的值。

Time complexity: O(1)

Space complexity: O(1)

Signature:

abstract has(key: K): boolean;

Parameters

Parameter	Type	Description
key	K	The key object.

Returns:

boolean

Whether the key has a value in the hash map.