查询词典 null function

Returns the value of the named attribute as an Object, or null if no attribute of the given name exists.

返回name指定的属性值为一个对象，如果指定属性不存在，则返回null。

Nbsp;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传感器，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。

A value can be a string in double quotes, or a number, or true or false or null, or an object or an array.

值可以是一个字符串放在双引号中，或一个数字，或真或假或无效，或者是一个对象或一个数组。

Each document has a DOCTYPE attribute that whose value is either null or a DocumentType object.

每个文档都包含一个DOCTYPE属性，该属性值可以是一个空值或是一个DocumentType对象。

Always provide a null lease for a singleton object.

总是为一扎对象提供一个null租约。

Applications should throw instances of this class to indicate other illegal uses of the null object.

四者确实都不相同，还要参照一下前面几位朋友的解释，应该能够明白吧

Its a good idea to check for null object reference to prevent NullReferenceException when it comes to objects but in case of Strings sometimes you get a string without any value or called as Empty string.

它的一个不错的主意，以检查空对象引用，以防止NullReferenceException时候，但物体的情况下弦乐有时你一个字符串没有任何价值或称为空字符串。

M m, or they will relate to null in different scanning plane to the reading of the correctness of your bar code.

，否则会因条与空在不同扫描平面上，而影响条形码识读正确性。

There are other places on the planet that are difficult to live, and that's at the null point .

有其他地方的这个星球是很难活，那就是在空点。

The last item in the list would point to NULL as it's the next node, so you'd know you're done.

列表中的最后一个项目将指向NULL作为它的下一个节点，所以你知道你这样做。

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