Otherwise, this function returns FALSE, causing the frame to be dropped.
否则，此函数返回FALSE，从而丢弃此帧。
If the probe function returns TRUE, the frame is passed down the stream, but if it returns FALSE, the frame is dropped.
如果探测器函数返回TRUE，该帧被传递给流，如果返回FALSE，该帧将被丢弃。
Because fopen returns False on failure, this will ensure that file processing happens only if the file opens successfully.
由于失败时fopen将返回False，这将确保仅当文件成功打开后才执行文件处理。
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。
The feof command detects whether you have already read to the end of the file and returns True or False.
feof命令将检测您是否已经读到文件的末尾并返回True或False。
Finally, consider that if UpdateCommand isn't defined, CanUpdate returns false and an exception is thrown if you try to submit changes.
最后，考虑这种情况：如果没有定义updatecommand，却提交更改，那么canupdate返回值为假，并引发一个异常。
Note that feof also returns False if you're reading a URL and the socket has timed out because you no longer have data to read.
如果读取的是URL并且套接字由于不再有任何数据可以读取而超时，则feof也将返回False。
The call to registry.getComponent() returns the registered object of the appropriate class if it can; otherwise, it returns a false value to allow testing.
如果调用registry.getComponent() 成功，则这次调用会返回对应类的已注册对象，否则就返回一个错误值以允许进行测试。
The is validated predicate returns true if the document is already validated against the specified schema and returns false otherwise.
如果已经根据指定的模式验证了文档，IS VALIDATED谓词将返回true，否则返回错误。
The XMLEXISTS is a Boolean function that takes an XPath expression as input and returns FALSE if the XPath expression returns an empty sequence and TRUE otherwise.
XMLEXISTS是一个Boolean函数，它接受一个XPath表达式作为输入；如果这个XPath表达式返回空序列，它会返回FALSE，否则返回TRUE。
Bool empty : If the path object contains an empty string for example, path path1 " ", then this routine returns True or False.
boolempty：如果path对象包含空字符串(例如pathpath1(“ ”))，则此例程将返回True。
Complete the form, specifying a serial number that begins with an even number so that the VerifyEmployeeStatus component returns false, which triggers the CreateSecurityIncident component.
完成表单后，指定以偶数开头的序列号，这样verifyemployeestatus组件将返回错误，从而触发CreateSecurityIncident组件。
When there are no more rows to fetch from the result set, odbc_fetch_array returns FALSE and the while loop ends.
当不再需要从结果集读取行时，odbc_fetch_array会返回FALSE，且while循环结束。
IsPrintable , which returns TRUE if the given string contains no unprintable characters and returns FALSE if the given string does contain printable characters.
isPrintable，在给定字符串不包含不可打印字符时返回TRUE，而在给定字符串确实包含不可打印字符时返回FALSE。
Once the predicate returns false, it stops taking from the sequence.
一旦断言返回false，它就停止从这个序列中获取。
If the valid function returns false for any of the two parameters, the remote call is canceled and an alert message is shown.
如果对于两个参数中的任何一个参数，valid函数返回false，那么取消远程调用，并显示一条警告消息。
If not, it redirects to the login screen and returns false, blocking the original closure call.
如果不在的话，它将重定向到登录屏幕并返回false，阻塞初始的闭包调用。
If the database connection attempt failed, then this function returns false.
如果无法建立数据库连接，那么这个函数返回false。
The form also contains a second button labeled Submit with Ajax, which invokes the submitSupportForm() function that returns false so the form isn't resubmitted by the Web browser.
该表单还包含第二个标记为SubmitwithAjax 的按钮，这个按钮调用submitSupportForm()函数返回false，因此该表单不会被Web浏览器重新提交。
This method returns true if the file or directory is successfully deleted. Otherwise it returns false.
若文件或目录被成功删除，此方法将返回true，否则返回false。
If the link condition returns false, that means the link cannot be followed.
如果链接条件返回False，则意味着不能遵循该链接。
If it does so, the read function returns false.
如果是这样的话，read函数将返回false。
The encodeTree() method (see Listing 16) invokes the encoding methods for the current component and is called recursively for the child components if getRendersChildren() returns false.
encodeTree()方法（参见清单16）为当前组件调用编码方法，如果getRendersChildren(）返回 false，则还会为子组件递归调用此方法。
If the specified XPath returns an empty sequence, XMLEXISTS returns false.
如果指定的XPath返回一个空序列，那么XMLEXISTS返回false。
If the transaction attribute takes the other allowed value of NotSupported, or the MDB is using bean-managed transactions, then it returns false.
如果事务属性采用NotSupported允许的其他值，或者MDB正在使用bean托管的事务，则返回false。
By default, when a validator returns false, the remaining validation checks are aborted, but that parameter is also configurable for each individual validator.
默认情况下，如果一个验证器返回false，则剩余的验证检查都将取消，但这个参数也可以对单个验证器进行配置。
It executes and returns true on success or false on failure.
它在查询成功时返回true，在失败时返回false。
Current implementation of Encina Connector returns false.
当前的Encina连接器的实现返回false。
If the field is false or visit returns PROCESS_CONTINUE, the function node accesses its child and calls CASTSimpleDeclSpecifier.accept .
如果该字段为false或visit返回PROCESS_CONTINUE，该函数节点访问其子节点并调用CASTSimpleDeclSpecifier . accept 。
This method also returns false if the input string is not a number at all.
如果输入的字符串不是一个数字，则该方法也将返回false。
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