查询词典 nil pointer

In C, NULL is defined as a null void pointer.

在C中，NULL 定义为一个null void指标。

If the system is unable to allocate memory for a new instance of the application, the returned instance pointer will be NULL.

如果系统无法为应用程序的新实例分配内存，返回的实例指针将是NULL。

A NULL pointer and an empty string are considered different .

NULL 指针和空字符串是不同的。

Removing an element not in a set will result in a null pointer being passed to delete.

删除一个不在set 中的元素会导致一个空指针被传递给delete。

The NULL argument is a pointer for the type, in this case it isn't used, since the method is declared void.

空参数是一个类型的指针，这是在不使用情况，因为该方法是宣布无效。

It is fine to delete a null pointer.

所以，删除之前检查是否为空是多余的

RETURNS: NULL on error, a pointer to the loaded file if OK.

返回：空的错误，是对加载的文件指针，如果确定。

In a case in which the list does not contain a node, the head pointer is NULL.

当表中不包含任个结点时，头指针就是 NULL 。

The vector pointer can also be set to NULL in which case a delta of (0,0 will be used.

矢量指针也可以设置为NULL，在这种情况下将使用(0， 0)的delta。

Note that the matrix pointer can be set to NULL, in which case the identity transform will be used.

注意，矩阵指针可以设置为NULL，在这种情况下将进行恒等变换。

Multifold report forms and statistic diagrams can be generated and the control diagram required for working procedure can be produced.

生成各类统计报表，和统计图，做出工序控制所需的控制图。

The best example of their conservativeness would probably be the case of how they had treated Galileo.

我们从教廷如何对待伽利略就可看出他们对於科学性的新发现是多麼的恐惧。