The via subelement of the rev element contains an empty value.
rev元素的via子元素包含一个空值。
If a security label does not have a value for one of the components, then an empty value is assumed.
如果安全标签没有用于某个组件的值，那么设定该值为空值。
As the checklist 1.1 indicated, you should set the Alt attribute for the ICONS to have an empty value.
如检查列表1.1指出的，您应当将图标的al t属性设为空值。
You can test for them explicitly or rely on PHP to return a default empty value when you reference them.
您可以显式地对它们进行检测，或在您引用它们时让PHP返回缺省的空值。
However, elements of type string do not appear as mandatory in the form because the schema accepts an empty value as valid input for a string.
但是，由于模式接受空值作为字符串的有效输入，因此，在表单中字符串类型的元素并不显示为必填的。
To do so, go to Edit page Settings for that page and set param.sharing.scope (under Advanced options - I want to set parameters) to a non-empty value such as scope1.
为此，请转到该页面的Editpagesettings，并将param . sharing . scope(在Advancedoptions-iwant tosetparameters下面)设置为某个非空值，例如scope1。
Now you set the store ID and supplier ID fields so that they do not accept an empty value. Of course, you can add a schema constraint into the XForms model to achieve this.
现在，设置storeID和supplier ID字段以使这两个字段不接受空值。
Actually such differences bring a series of problems, such as, differences of data structure, empty value data, illegal data, and repeated records, etc. when we need to use the primary data in audit.
这种不一致造成审计中需要的原始数据存在很多问题，比如数据结构的不一致、空值数据、非法数值以及存在重复记录等等。
It is therefore important that your code checks a return value is not an empty handle before continuing execution.
所以在继续执行前，在代码中检查返回值是否为一个空句柄是非常重要的。
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。
Additionally, since the potential breadth of content available under each facet is presented by a numerical value, you can insure against exploring any "empty" paths.
此外，因为通过数值表示了每个方面可用内容的潜在范围，所以您可以确保不会深入研究任何“空”的路径。
If an exception was raised, then assignment to the scoped variable will occur: as the EL expression in Listing 18 suggests, its value will not be empty.
如果产生了异常，那么就会对那个限定了作用域的变量进行赋值：如清单18中的EL表达式所显示的那样，该变量的值将不会为空。
When an SPU tries to read from an empty mailbox, it will stop execution until some value is written to its memory-mapped register.
当spu视图从一个空的邮箱中读取信息时，它会停止执行，直到有值写入自己的内存映射寄存器中为止。
Most designers know the value of white space, which is the empty space between paragraphs, pictures, buttons and other items on the page.
很多设计师都知道空白的价值，也就是页面中段落、图片、按钮和其它元素之间的空白。
A variable is initialized with an empty text string as its default value when declared.
一个变量会使用一个空白的字符串作为声明时的默认值，来得到初始化。
It has an internal state variable that starts with the value EMPTY and becomes FULL as soon as an object is put into it.
它有一个内部状态变量，该变量的起始值为EMPTY，只要放进一个对象，该变量的值就变成FULL了。
The goal is that the field will be validated on the server side to check that it is not empty and that the value is numeric.
目的是将字段在服务器端验证，检查其是否为空，其值是否是整数。
The value of the remaining letters written in the a | a format. If there are no letters left, the value is empty; otherwise, you call the template recursively.
用a | a格式写的剩余字母的值如果已没有字母，则该值为空；否则，递归调用该模板。
Use the default value of Empty for the type of space to create, as shown in Figure 9.
使用缺省值empty作为要创建的空间类型，如图9所示。
If the value returned is an empty handle, and you do not have a TryCatch in place, your code must bail out.
如果返回值是一个空句柄，并且你没有正确的设置TryCatch，你的代码就会崩溃。
If this value is set to null or empty string, CLP throws a JCC exception: Column not updatable.
如果将这个值设置为null或空字符串，clp会抛出JCC异常：Column not updatable。
However, without the square brackets the XQuery expression is a Boolean expression which always returns a Boolean value and never the empty sequence.
然而，如果不使用方括号，XQuery表达式就是一个总是返回boolean值的Boolean表达式，而不会返回空序列。
The previous parameter starts off with the initial value, or, in this case an empty string.
previous参数有一个初始值，在本例中，是一个空白字符串。
The second call to the read method, where you try to assign the value to the str variable, returns an empty string.
在对read方法的第二个调用中，试图把值分配给str变量，结果返回一个空的 string。
It mandates the SOAPAction header to contain the exact value of the SOAPAction attribute in the WSDL but it also allows empty SOAPAction values.
它要求SOAPAction报头必须包含与WSDL中SOAPAction属性相同的值，但是它也允许空的soapaction值。
The verify method returns 0 if the value is not empty or 1 if the value of the required field has not been entered.
如果值不为空，verify方法返回0，如果需要的字段的值没有输入，就返回1。
The value produced by that XQuery is either the customer's name element if the predicate is true, or the empty sequence otherwise.
那个XQuery产生的值，当谓词为true时为客户的name元素，否则为空的序列。
If fetch returns FALSE, the result set is empty, thus a catalog table row for the catalog id value is not defined in the database table.
如果fetch返回FALSE，则结果集为空，表明数据库表中还没有为catalogid值定义一个catalog表行。
You might also consider checking for empty string values. A user could specify a blank value surrounded by double quotes.
您还可能会考虑检查空的字符串值。
You might also consider checking for empty string values. A user could specify a blank value surrounded by double quotes.
您还可能会考虑检查空的字符串值。
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