_hashDelete.js
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_hashDelete.js
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			/**
			* Removes `key` and its value from the hash.
			*
			* @private
			* @name delete
			* @memberOf Hash
			* @param {Object} hash The hash to modify.
			* @param {string} key The key of the value to remove.
			* @returns {boolean} Returns `true` if the entry was removed, else `false`.
			*/
			function hashDelete(key) {
			var result = this.has(key) && delete this.__data__[key];
			this.size -= result ? 1 : 0;
			return result;
			}

			module.exports = hashDelete;