它必须是非空的。
The procedure can return null or non-null values.
该过程可以返回null或非null值。
Thread 2 sees that instance is non-null, and returns it.
线程2发现instance为非null，将其返回。
Within this routine, first a check for non-null context handle is made.
在这个例程中，首先检查是否有非空的上下文句柄。
As a result, instance is now non-null and refers to a valid Singleton object.
结果是，instance现在为非null并引用一个有效的Singleton对象。
Hence, first object must always have non-null values.
因此，第一个对象必须有非空值。
When we encounter a non-null node, we record the node's value.
当遇到非空节点时，记录节点的值。
Use any (non-null) value for user ID and password, and click the Test Connection button.
使用任意（非空）值作为用户ID和密码，并单击TestConnection按钮。
For example, the default invariant condition for a field requires the field to be non-null.
例如，字段的默认不变条件要求字段不能为空。
Click on CustomerRecord , and you will see a non-null value appear as the value in the parameters area.
单击CustomerRecord，您会看到出现一个非空值作为参数区域中的值。
The group within the non-null links section is itself fairly hairy, though with good reason (Listing 12).
非空链接部分中的组本身相当复杂，但这是有原因的（参见清单12）。
If a page action method invocation returns a non-null string value, Seam treats it as a navigation event.
如果页面动作方法调用返回一个非空字符串值，则Seam将其当作一个导航事件。
Note that when the second thread enters the synchronized block, it does not check to see if instance is non-null.
注意：当第二个线程进入synchronized块时，它并没有检查instance是否非null。
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
未能启用约束。一行或多行中包含违反非空、唯一或外键约束的值。
For each document in the database that has name and amount fields with non-null values, a result row is created in the view.
对于数据库中包含具有非空值的名称和金额字段的每个文档来说，将在视图中创建一个结果行。
The net effect is that a service constructor either returns a non-null instance of the requested service, or throws an exception;
实际结果是服务构造函数或者返回所请求服务的非空实例，或者抛出异常；
This structure contains the resource manager's name, non-null pointers to the resource manager's entry points, a flag, and version number.
此结构包含资源管理器的名称、指向资源管理器入口点的非空指针、标志和版本号。
The problem with this line of code is that the variable instance can become non-null before the body of the Singleton constructor executes.
这行代码的问题是：在Singleton构造函数体执行之前，变量instance可能成为非null的。
In the quiescent state, the next field of the link node pointed to by the tail is always null; in the intermediate state, it is always non-null.
在静止状态时，尾指针指向的链接节点的next字段总为null，而在中间状态时，这个字段为非null。
Two conditions need to be satisfied in order for serialization to happen: the serializer must be given a supported type and the object to be serialized must be non-null.
为使序列化能够发生，需要满足两个条件：必须为序列化器授予受支持的类型，并且待序列化的对象必须是非空的。
For now, however, it becomes necessary to differentiate between null links and non-null links when generating output, which is why there are two distinct repeat sections.
但是目前在生成输出时，有必要区分空链接和非空链接，所以这里有两个不同的重复部分。
Accordingly, you should always check that get returns a non-null value before using its result, as it is expected that the referent will eventually be garbage collected.
相应地，在使用其结果之前，应当总是检查get是否返回一个非null值，因为referent最终总是会被垃圾收集的。
If there is only one non-NULL value in the column.
如果列中只有一个非空值。
Else, it goes through the binding vector array looking for a non-NULL pointer to binding handle.
否则，它循环遍历绑定向量数组，寻找非null的绑定句柄指针。
For each non-NULL variable-length field, the record header contains the length of the column in one or two bytes.
对于每个非空的变长字段，记录头使用一或两个字节包含了列的长度。
Or, in the case of a non-applicable method, it becomes a null operation.
或者，在不适用的方法的情况下，成为空操作。
Path location — Returns an element or null if it doesn't exist in a non-modifiable tree.
路径位置——返回一个元素，如果不可修改的树中不存在该元素，则返回null。
You'll want to be sure to always return null if no match occurs, so that entity resolution will occur normally in non-special cases.
当不匹配时，您会希望始终确保返回null ，这样实体解析在非特殊情况下都可以正常进行。
Non observance of one or more of the above mentioned articles will render this agreement null and void.
不遵守本合同上述任何条款的，将使本合同作废失效。
Non observance of one or more of the above mentioned articles will render this agreement null and void.
不遵守本合同上述任何条款的，将使本合同作废失效。
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