By using these custom functions, not only can you return a calculated value, but you can also manipulate the form directly.
通过使用这些定制函数，不仅可以返回计算值，还可以直接操作表单。
Here the term UDR is used generically to refer to functions that return a value.
这里的udr一词通常用来指代返回值的函数。
This can be a pain at first — some programmers don't realize that printf and many other functions actually return a value.
起初，这可能是一个痛苦的问题——有些程序员并没有认识到printf和很多其他函数实际上也会返回一个值。
As with other traditional functional languages, Scala requires that functions (in this case a method) must always return a value.
与其他传统函数语言一样，Scala要求函数(在本例中为一个方法)必须始终返回一个值。
However, Vimscript functions always return a value, so if no return is specified, the function automatically returns zero.
然而，Vimscript函数始终返回一个值，因此如果没有指定任何return，那么函数将自动返回0。
The functions can be coded to return a single value (for scalar functions) or multiple values (for table functions).
函数可以返回单一值(对于标量函数)或多个值(对于表函数)。
When invoked with a map, keyword functions look themselves up in the map and return their own value.
在通过map调用时，关键字函数将在map中查找自身，并返回自己的值。
In practice, I don't use such graphs to compute tail probabilities because I can implement mathematical functions to return the tail probability for a given Chi Square value.
实际上，我不使用这些图来计算尾数概率，因为我可以实现数学函数来返回给定x平方分布值的尾数概率。
Void functions might display something on the screen or have some other effect, but they don't have a return value.
无返回值的函数要么就是屏幕上显示出一些内容，要么就有其他的功能，但就是没有返回值。
The arguments applied to the load_biz_rules are the broker process id and the file name containing business rules; the return value is a list of Erlang functions.
传给load_biz _ rules的参数是broker进程的ID和业务规则所在的文件；返回的是一个Erlang函数列表。
Other functions, like print_twice, perform an action but don't return a value.
其他的函数，比如print_twice，都是进行一些操作，但不返回值。
The only differences are that functions always return a single value to the caller, while procedures do not.
函数会给调用者返回一个返回值，但存储过程不会。
The only differences are that functions always return a single value to the caller, while procedures do not.
函数会给调用者返回一个返回值，但存储过程不会。
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