To guarantee that the header is processed only once in a given source file, we start by testing the #ifndef.
为了保证头文件在给定的源文件中只处理过一次，我们首先检测 #ifndef。
REPHEADER: report header; displayed once only at the beginning of the report.
报表页眉；只在报表的开始处显示一次。
Setting an empty item template would only show the template but not the header or the footer.
设置一个空项目模板只可以显示模板而不是页眉或页脚。
You'll import the dashboard code in the header so that the code is imported only once in the report.
您可以导入头部信息的操作板代码，这样报告中只会将代码导入一次。
Listing 6 shows a header request specifying that only data that has been modified since November 11, 2003 be sent back from the server.
清单6显示了一个指定只有自2003年11月11日以后修改的数据才送回服务器的头。
The header files are modified only rarely during the scope of a project.
在一个项目的范围内，很少对头文件进行修改。
An intermediary can only process the header entry of the SOAP message intended for it.
中介体仅可以处理传送给它的SOAP消息的头条目。
For example, suppose the programmer is familiar only with the header of class d.
例如，假设程序员只熟悉类d的头。
Similarly, the lexer has to know about the structure of continuations; the parser only knows that it sometimes gets additional text to add on to a header.
与此类似，lexer必须明白附加部分的结构；解析器只知道有时它需要将附加的文本添加到标题中。
The second line, the first rewrite condition, indicates that following rules only apply when the user-agent string in the HTTP request header contains the substring MSIE.
第二行的第一个重写条件表明：下面的规则仅适用于HTTP请求报头中的user - agent字符串包含子字符串msie的情形。
Because BigEcho is the only match in this test, the endpoint information is returned in the query and the primitive places the endpoint address in the header to drive the dynamic endpoint mechanism.
在此测试中，由于BigEcho是仅有的匹配项，因此在查询中将返回端点信息，并且元素将把端点地址放入消息头中以驱动动态端点机制。
If a user later deletes the attachment, Lotus Domino deletes only the reference in the document header.
如果用户后来删除附件，LotusDomino只删除文档头部中的引用。
As of this writing, Twitter only supports HTTP basic authentication, which means that the request header must contain your user name and password in an encrypted format.
在本文写作之时，Twitter只支持HTTP基本的身份验证，这意味着此请求头必须以加密的格式包含您的用户名和密码。
Select which parts of the message will be mapped (header and body, or body only)?
选择将映射哪些部分的消息(标头和正文，或仅映射正文)？
We use a selective consumer to accept only messages that bears a header confirming that the order was successfully placed.
我们使用的选择性消费者(selectiveconsumer)所接收的消息中一定要包含订单成功处理的头信息。
Using a far future Expires header affects page views only after a user has already visited your site.
一个用户已访问过您的网站后，才使用远未来的Expires标题会页意见的影响。
When you use an Expires Header, you can cache those elements on the user’s local machine, not only increasing their speed, but also saving you bandwidth.
当你使用了ExpiresHeader,你可以在用户的本地机器对这些元素进行缓存，不仅提高了他们的访问速度，也节省了你的带宽。
If you want to propagate your security information only as far as a particular intermediary, you can address a particular WS-Security header to that actor.
如果您只是想把安全性信息传播到一个特定的中介体，您可以为该操作者指定一个特定的WS - security头。
The MDB only handles messages that have the JMSType header field set to package_received (this is defined in the MDB's deployment descriptor).
MD b仅处理具有设置为package_received的JMSType标头字段的消息(这在MDB的部署描述符中定义)。
The file only contains the header with the encoding setting from the user preference.
这个文件只包含带有根据用户首选设置的编码设置的标题。
For something simple, like a header image, you might be able to only run a short-term test.
对于一些简单的东西，比如标题图片，你可能只需要一个短期的测试。
Since only LINE tokens can occur in a body, the next other token that shows up will be part of a header — or a syntax error.
由于主体中只会出现LINE标记，所以出现下一个其他标记，表明这是标题部分——或者是一个语法错。
The only information added in the process was some descriptive names for fields, but that could have also been specified in a single header line of less than a hundred bytes.
此过程中添加的唯一信息是一些字段的描述名称，但那本来也可以使用不超过一百个字节的、简单的标题行指定。
You have only a limited level of customization on the header bar.
您仅能对头部栏进行有限的定制。
This header is of particular benefit in a multi-client environment, as it can be used to delete or update an entry only if it hasn't already been changed since it was last read.
该头部在多客户端环境中尤其有用，因为它可用于删除或更新自上次读取以来未发生更改的条目。
Moreover, it may occur only if the program header table is part of the memory image of the program.
更进一步来说，它仅仅在该程序头表是程序内存映像的一部分时才出现。
On further thought, a header can have only one title tag, but it can have multiple meta tags.
进一步考虑，标题可以只包含一个title标记，但它可以包含多个meta标记。
Consider Listing 12, which demonstrates by retrieving only the header row of a specified worksheet.
考虑清单12，其中演示了只检索指定工作表的标题行。
Consider Listing 12, which demonstrates by retrieving only the header row of a specified worksheet.
考虑清单12，其中演示了只检索指定工作表的标题行。
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