Before using objects like rows and cells, be sure to test them to make sure they are not null.
在使用行和单元格这样的对象之前，一定要测试它们，确保它们不为空。
The unit test methods first verify that the object provided is not null, and then perform one or more very basic actions on the object.
单元测试方法首先验证所提供的对象不是空的，然后对该对象执行一个或多个非常基础的操作。
An error could occur in the first test and prevent the variable's value from being set, thus resulting in the other tests receiving a null value.
错误可以发生在首个测试期间，并阻止您去设置变量的值，并导致其他的测试接受一个空值。
The previous test for a Null Customer was intended to prove that use case (however fictitious it maybe) and this it did well.
前面为Null客户所做的测试想要去证明这个用例(但它可能是虚构的)，这做的不错。
For this test, the Ex versions of the strsafe functions set NULL on failure and 0xfe as the fill byte.
在测试中，调用ex版本的strsafe系列函数的程序会在调用失败时把缓冲区设为NULL，并以0xfe作为填充字节，代码如下。
After a quick test of your new structure (namely, it's not NULL), continue to make the call using the call_usermodehelper_exec function.
快速测试新结构(即，非null)后，使用call_usermodehelper_exec函数继续调用。
In this case, I perform a test to make sure the column location isn't null.
在这里，我执行了一个测试来保证列位置不为null。
For example, there's a JUnit ruleset that finds common problems (such as using assert(x==null) vs assertNull(x)) in JUnit test suites.
例如，JUnit规则集用来在JUnit测试套件中寻找常见的问题（如使用了assert(x==null)而不是assertNull(x)）等。
Called ON null INPUT — Specifies that the procedure is to be called even if any or all argument values are null, which means that the procedure must be coded to test for null argument values.
CALLEDONnullINPUT——指定将调用的过程，即使任何参数值或所有参数都为null，这意味着必须对过程进行编码，来测试那些null参数值。
Second, a failed test should indicate that something unexpected happened (for example, a reference is null) and normal execution can't continue.
其次，失败的测试应当代表发生了意料之外的事（例如，引用为空），正常的执行不能继续。
To test your null hypothesis, you want to know the probability of obtaining a value this extreme under the assumption that it is due to random sampling variability.
要检验虚假设，需要知道在假设存在随机抽样可变性的情况下获得这么一个极限值的概率。
In that case, get returns null, making it even more important than usual to test the return value of get for null.
在这种情况下，get返回null，这使得测试get的返回值是否为null变得比平时更重要了。
In this case, rather than an exception being thrown, the "test" value isn't being found; null is being popped.
在这种情况下，不是抛出一个异常，而是没有发现“test ”值；实际弹出的是null。
Note that the test for null values is gone from the for statement, because you want to handle that condition by writing a diagnostic record.
注意，对null值的检查从for语句中消失了，因为希望通过写诊断记录来处理这种情况。
For example, if the JVM cannot find a class required by custom code at test run time, IBM Rational Agent Controller will ignore the custom code and act as if it had returned null.
例如，如果在测试运行时jvm不能找到定制代码所需的类，那么IBMRationalAgentController将忽略定制代码并认为它应该返回null。
This test-the-null-hypothesis-first logic applies at multiple stages in the analysis of poll data.
这个“先检验虚假设”逻辑在民意测验数据分析中的多个阶段都适用。
The first two lines of assembly code at B0 and B5 load the instance reference from memory location 049388C8 into eax and test for null.
B0和B5 处的前两行汇编代码将 instance引用从内存位置 049388C8 加载至eax 中，并进行 null 检查。
Use a null modem cable to connect the two nodes through their serial ports. Now test the serial connection, as follows.
通过两个节点的串口，使用一根直连线缆将它们连接起来。
Whatever is entered as empty string in Oracle gets stored as NULL internally in the database. The following shows an example of a TEST table created in Oracle and db2.
在Oracle中，输入的空字符串在数据库内部存储为NULL。
It is shown that the asymptotic null distribution of the modified likelihood ratio test proposed is derived and found to be relatively simple and easily applied.
最新的文献表明这个提出的修正似然比检验统计量在零假设下的渐近分布是比较简单，并且是容易应用的。
This tool is used to test the null hypothesis that there is no difference between two population means against either one-sided or two-sided alternative hypotheses.
此工具用于检验两个总体平均值之间不存在差异的空值假设，而不是单方或双方的其他假设。
The z-Test tool can also be used for the case where the null hypothesis is that there is a specific nonzero value for the difference between the two population means.
检验工具还可用于当两个总体平均值之间的差异具有特定非零值的空值假设的情况。
It is shown that, under both the null and the local alternatives, the random weighting statistics have the same asymptotic distribution as the original test statistic under the null hypotheses.
我们证明了在原假设和局部对立假设之下随机加权统计量的条件渐近分布与检验统计量在原假设之下的渐近分布相同。
And according to the null hypothesis of hypothesis testing, the theory of panel unit root test and co-integration test are systemically described.
其次，按照假设检验的零假设进行分类，系统阐述面板单位根检验和协整检验理论。
Output: For each test case, the element values of its child nodes are output in the preceding order. If null output null.
输出：对应每个测试案例，按照前序输出其孩子节点的元素值。若为空输出NULL。
Output: For each test case, the element values of its child nodes are output in the preceding order. If null output null.
输出：对应每个测试案例，按照前序输出其孩子节点的元素值。若为空输出NULL。
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