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。
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。
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。
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。
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。
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。
Listing 3 initializes a new Zend_Soap_Server object in non-WSDL mode, passing a null value as the first argument to the object constructor.
清单3传递一个null值到对象构造函数的第一个参数，以非wsdl模式初始化了一个新的Zend_Soap_Server对象。
NULL values of compatible data types are treated identically; those of non-compatible data types may not be.
对兼容数据类型的NULL值的处理是完全相同的；对不兼容数据类型的 NULL 值的处理可能不相同。
This call is also non-blocking, which means that getnb can return null.
此调用也是非阻塞的，这意味着getnb可以返回null。
This call is also non-blocking, which means that getnb can return null.
此调用也是非阻塞的，这意味着getnb可以返回null。
应用推荐