As with the IRR function, guess is an optional argument.
与irr函数一致预测值是可选参数。
We said "optional argument lists", meaning more than one.
我们刚才说到“可选的参数列表”，这意味着一个或更多。
The open-parenthesis is followed by an optional argument list.
开括号后面跟着一个可选的参数列表。
Recall that the constructor takes the cache object as an optional argument.
回想一下，构造函数以可选参数的方式接受缓存对象。
The function has the syntax IRR (range of cash flows, [guess]), where guess is an optional argument.
函数的语法为IRR(现金流区域 [guess])这里的 guess是一个可选参数（预测值）.
For example, for functions that take optional arguments, the wrap_*() function extracts the optional argument.
例如，对于使用可选参数的函数，wrap_*()函数将提取可选的参数。
The MetadataServlet works the same way but has an optional argument that the metadata service implementation can use as a hint to retrieve the metadata.
MetadataServlet也是这样工作，但是有一个可选的参数，可以被元数据服务实现做为提取元数据的一个提示。
You can add an optional argument, a variable that holds the return code from the external program, such as 0 for success, which provides a better mechanism for debugging.
您可以添加可选的参数，即保存从外部程序返回的代码的变量，比如表示成功的0，这为调试提供更好的机制。
The CommentBlock function in Listing 4, for example, assumes that the comment introducer is the optional argument that is most likely to be needed, and so places it first in the parameter list.
例如，在清单4中的CommentBlock函数，假设评论人可能是最需要的可选参数，所以将其放置在参数列表的第一位。
The optional argument represents a fallback value, which is used if the named attribute is missing, or its value cannot be parsed into the given type or is invalid/out-of-range for the property.
可选参数表示应变值，如果命名属性用于失踪，或它的价值不能被解析到特定类型或属性是无效或超出范围。
The optional input or output argument explain_schema can be used to specify the schema for the explain tables where explain information should be saved.
可选的输入或输出参数explain_schema可用于指定保存解释信息的解释表的模式。
The optional input or output argument explain_schema can be used to specify the schema for the explain tables where explain information should be saved.
可选的输入或输出参数explain_schema可用于指定保存explain信息的解释表的模式。
The optional page size argument is given in units of kilobytes, and the optional mirror flag is either 1 for mirroring, or 0 for no mirroring. The syntax for the this command is as follows.
可选页面大小参数以千字节为单位给定，且可选镜像标志是1(镜像)或0(无镜像)。
The first argument is the substring, the second argument is the search string, and an optional starting position can be supplied as a third argument.
第一个参数是子字符串，第二个参数是搜索字符串，可选的起始位置可以提供作为第三个参数。
The argument is optional and allows retrieving of item values for a document other than the current one being processed by the current URL.
参数是可选的，允许检索文档的项值，而不是正被当前URL处理的当前项值。
Each method call and optional closure argument defines a bean and sets bean properties.
每个方法调用和可选的闭包参数定义一个bean，并设置bean属性。
The third argument, also optional, is a function to execute if the Ajax function returns successfully.
第三个参数也是可选的，是Ajax函数成功返回时所要执行的函数。
Priority is an optional integer argument that can be used to specify the order in which the functions associated with a particular filter are executed (default: 10).
priority参数是一个可选的整型参数，他用来指明在结合特定事件的多个函数中，当前函数被执行的顺序(默认为10)。
Priority is an optional integer argument that can be used to specify the order in which the functions associated with a particular action are executed (default: 10).
priority参数是一个可选的整型参数，他用来指明在结合特定事件的多个函数中，当前函数被执行的顺序(默认为10)。
The colon at the start of the command is optional, but it's a good idea to include it; doing so makes the command easier to locate in the (usually complex) argument list of an autocmd.
命令开始处的冒号是可选的，但是最好加上；这么做能够让命令更轻松地在一个(往往很复杂的)autocmd参数清单中定位。
An optional integer argument that can be used to specify the order in which the functions associated with a particular filter are executed (default: 10).
priority参数是一个可选的整型参数，他用来指明在结合特定事件的多个函数中，当前函数被执行的顺序(默认为10)。
When I added rename operations, at the time it seemed like a good idea to make the last argument (which would otherwise have been const char *oldpath) optional.
添加重命名操作在那时就像是添加最后一个可选参数（否则可能应为 constchar *oldpath）一样，算是很好的主意。
As a second argument, it can also accept an optional pthread_mutexattr_t pointer.
第二个参数，可以接受一个可选的pthread _ mutexattr_t指针。
This article doesn't explore it, but size accepts an optional third argument for mode.
本文无意对此做深入探讨，但size接受可选的第三个参数mode。
The row version takes one argument, a string, and an optional block.
row版本将获取一个实参、字符串和可选块。
The type argument communicates the command to perform and is associated with an optional buffer with its length.
type参数是用于传递所执行的命令，它指定了可选的缓冲区长度。
Accepted_args is an optional integer argument defining how many arguments your function can accept (default 1), useful because some hooks can pass more than one argument to your function.
accepted_args参数是一个可选的整型参数，他定义了你的函数中可以接收多少个参数(默认为1)。该参数是非常有用的，因为某些Hook可以向你的函数中传入多个参数。
Accepted_args is an optional integer argument defining how many arguments your function can accept (default 1), useful because some hooks can pass more than one argument to your function.
accepted_args参数是一个可选的整型参数，他定义了你的函数中可以接收多少个参数(默认为1)。该参数是非常有用的，因为某些Hook可以向你的函数中传入多个参数。
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