In many null-pointer exceptions, the true bug occurs where the variable is actually assigned to null.
在许多空指针异常中，真正的错误出现在变量被赋为空值的地方。
Null-pointer exceptions will never be completely eradicated.
空指针异常将决不会被完全根除。
That vector is called a "null vector".
那种矢量就叫做”零矢量“。
If the XML parser sees a null character in its input, it throws an exception and stops processing.
如果XML 分析程序在其输入中看到一个空字符，它就会发出异常并停止处理。
We added the NOT NULL flag to indicate that the fields must not be null.
我们添加了NOTNULL标志来指示字段必须不能为空。
Make sure you are not accessing null pointer.
确保您不是在访问空指针。
Constraints Supports, primary, foreign, unique, not null constraint.
约束支持主键、外键、惟一和非空约束。
Null and default value Compression (V8 GA) : Compression for null, zero length data in variable length columns and system default value.
null值和缺省值压缩(V 8GA)：对变长列中的零长度空数据和系统缺省值进行压缩。
This expression also removes all null characters and excess whitespace.
此表达式也会删除所有空字符和过量的空白。
Always be prepared for null namespaces on qualified names.
始终准备好处理限定名称上的空名称空间。
Step 3: Generate a null accessor.
第3步：生成一个空访问器。
Nullable types and null coalescing operator
可置空类型和空合并运算符
In addition, avoid returning objects that are null or in an invalid state.
此外，避免返回空对象或者状态无效的对象。
A section delimiter: 0x00 (the null byte).
节定界符：0x00(空字节)。
A null return value implies all active slices, while an empty array will raise an exception.
空返回值意味着所有片都是活动的，而空数组则会引发一个异常。
Furthermore, it says nothing about where in the code the null pointer was actually assigned.
此外，它并不指出在代码的何处这个空指针被赋值。
Listing 12. Testing for a null zip code.
清单12.空邮政编码的测试。
Each of these methods will return null if its opposite component or window is in a different context.
如果其对立组件或窗口处于一个不同的上下文，这些方法中每一个都会返回空。
Substituting for null or unset variables.
替换空变量或未设置的变量。
Any variables that are not mandatory can be null.
任何非必需的变量都可以为空。
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。
It is ideal for use as a null detector for lowimpedance bridge balancing.
对于低阻抗电桥平衡而言，它是一种十分理想的零位探测器。
Beam pattern null in the direction of the jamming is formed by a space filtering and assisted receive channels to suppress the jamming.
它是采用空间滤波技术，通过辅助通道在干扰方向上形成波束图的零点来实现对干扰信号的抑制。
Beam pattern null in the direction of jamming is formed by space filtering and assisted receive channels to suppress the jamming.
它采用空间滤波技术，通过辅助接收通道在干扰方向形成波束图的零点，实现对干扰信号的抑制。
If the object argument is null, you need to generate a null accessor for the type.
如果对象参数为空，您需要为这个类型生成一个空访问器。
If the column is defined as null capable, then you must update the null indicator map accordingly.
如果列被定义为支持空值，那么您必须相应更新空指示符映射。
That means a reference type can have a null pointer, but a value type cannot have a null value.
这意味着引用类型可能有空指针，但是数值类型不能有空值。
Unfortunately, many designers have still not learnt that the special null pointer or null object is an equally bad idea.
遗憾的是，许多设计者并没有认识到空指针或空对象带来的危害。
Unfortunately, many designers have still not learnt that the special null pointer or null object is an equally bad idea.
遗憾的是，许多设计者并没有认识到空指针或空对象带来的危害。
应用推荐