无法使用 IN 在 fcmp 函数中搜索数组

Question

我有一个带数组的 fcmp 函数，但 IN 运算符似乎不起作用。我做错了什么？

proc fcmp outlib=mylib.UserFuncLib.dateFuncs;
function previousWorkingDayDate(dateWeekday);
    * Not a weekend and not a bank holiday;
    dayBefore = intnx('Day',dateWeekday,-1);

    * Array of bank holidays, needs to be kept updated;
    array bankHolidays[9] / nosymbols 
        ('03Jan2022'd '15Apr2022'd '18Apr2022'd '02May2022'd 
            '02Jun2022'd '03Jun2022'd '29Aug2022'd '26Dec2022'd 
            '27Dec2022'd );

    do while ((dayBefore in bankHolidays) or weekday(dayBefore) < 2 or weekday(dayBefore) > 6);
        dayBefore = intnx('Day',dateWeekday,-1);
    end;
    return(dayBefore);
endsub;

代码 dayBefore in bankHolidays 给出 ERROR 79-322: Expecting a (.

求助！谢谢

Answer 1

我认为这只是 FCMP 不支持的 SAS 语法的一个例子。事实上，我认为 SAS 知道这一点......当我稍微改变它以包含括号时，错误消息告诉：

  80             do while ((dayBefore in (bankHolidays) or weekday(dayBefore) < 2 or weekday(dayBefore) > 6));
 ERROR: The array 'bankHolidays' cannot be an argument of the 'IN' operation.

从FCMP Documentation来看，我觉得这个说的比较明确：

The ARRAY statement that is used in PROC FCMP does not support all the features of the ARRAY statement in the DATA step. Here is a list of differences that apply only to PROC FCMP:

All array references must have explicit subscript expressions.

您可以通过几种不同的方式解决这个问题；最简单的就是迭代它（或者甚至编写另一个 FCMP 函数来为您完成），或者使用宏变量。

如果您真的打算尝试这样做，您可以直接询问 SAS（支持 @ sas.com），看看他们是否可以就是否有直接的方法给您一个明确的答案这个。

无法使用 IN 在 fcmp 函数中搜索数组

Unable to use IN to search an array in a fcmp function

arrays

sas

fcmp