查询词典 null function

Another precaution you should take when closing connections is to make sure the connection object is not null.

另外关闭连接的时候你应该预防的是确保连接对象非空。

The pointer is not NULL but the object is long gone.

指针不为NULL，但对象已经不存在了。

If you want to assign a parent layer, but do not want that layer to be a visible element in your project, use a null object.

如果你想要指定一个亲子阶层但并不想要让那个阶层在你的方案成为一个可见的要素，可以使用无效的物体。

They share a certain similarity with the Null Object pattern in that they are purposefully not meant to work.

它和 Null Object 模式有很多相通之处，那就是它们不是为做事情而设计。

It is possible that the programmer intended to check to see if the object was null.

可能是，程序员打算去检查，object对象是不是null。

When an attempt to access an object is made, and the reference to that object is null, a NullPointerException will be thrown.

当创建了一个试图访问一个对象和空对象的引用时，一个NullPointerException将被抛出。

If you do not set the opener property to null, the window1 object remains, even though it's no longer really needed.

如果不这样的话，会使浏览器持续的保留每个opener的值，直至资源耗尽。

Adjust and animate a null object as you would any other layer.

当你要其他阶层时，调整及驱动无效的物体

The async result object is null or of an unexpected type.

异步结果对象为空或属于意外类型。

If we now rerun the code to traverse all cars and their sensor readings, we are again confronted with the same problem that we had before, we end up with some leaves of our object graph being null.

如果我们重新运行代码来遍历所有的赛车以及它们的感应器读数，那么我们将遭遇和前面一样的问题，我们获得的对象图表中的某些叶子节点为null。

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样