javascript,let arr = [1, 2, 3, 4, 5];,
`,,2. 使用
Array 构造函数:,
`javascript,let arr = new Array(1, 2, 3, 4, 5);,
`,,3. 创建一个指定长度的空数组:,
`javascript,let arr = new Array(5); // 创建一个长度为5的空数组,
`,,4. 使用
Array.of 方法:,
`javascript,let arr = Array.of(1, 2, 3, 4, 5);,
`,,5. 使用
Array.from 方法将类数组对象或可迭代对象转换为数组:,
`javascript,let arr = Array.from('hello'); // ['h', 'e', 'l', 'l', 'o'],
``sql,CREATE PROCEDURE GetEmployeeCount(IN department_id INT, OUT employee_count INT),BEGIN, SELECT COUNT(*) INTO employee_count, FROM employees, WHERE department_id = department_id;,END;,
``TRUNCATE TABLE table_name PARTITION (partition_name);
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