null是什么意思

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1. A spokeswoman said the agreement had been declared null and void. 女发言人称该协议已宣布无效。来自柯林斯例句

2. Failure. The NULL value has been passed as a parameter. 失败. 将空指针NULL传给了一个参数. 来自互联网

3. If mem block is NULL, pointer is ignored and free immediately returns. 如果NULL内存块,操作将被忽略并且函数立即返回. 来自互联网

4. This function returns the removed node on success, or NULL on failure. 这个函数如果执行成功,将返回被删除的子节点;如果执行失败, 将返回null[空值]. 来自互联网

5. A pointer to a NULL - terminated string representing a device instance identifier. 指向一个以NULL结尾的字符串,象征设备实例描述符. 来自互联网