查询词典 null

Make sure you are not accessing null pointer.

确保你不会访问null指针。

Self cannot be a null pointer because we would not have otherwise found this method.

self 不可以是空指针，要不然我们会找不到这个方法。

Here's what results from dereferencing a NULL pointer on a PC running Version 2.6 of the kernel.

这是通过在一台运行着2.6内核的PC机上废弃一个NULL指针所引起的。

Always check for an incoming NULL pointer, when there is a pointer involved.

总是检查传入NULL指针，当涉及的是一个指针。

Null pointer errors are usually the result of one or more programmer assumptions being violated.

空指针错误通常是一个或多个程序员假设出错的结果。

If the list is empty a NULL pointer is returned.

如果链表本空，则返回一个 NULL 指针。

Hence, initializing a pointer to NULL is equivalent to initializing it to 0

因此，把指针初始化为 NULL 等效于初始化为 0 值

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。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。