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Function/case

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    Function/case

    Hi Phorum,

    How many case(logical expressions) are permitted in a function?

    efs

    #2
    RE: Function/case

    Assuming you want to know how many logical expressions can be used in the Case() function -- 16. If you are looking for something else, please clarify.

    Comment


      #3
      RE: Function/case

      Cal's typing is getting faster! and of course he has given you the correct answer.

      What may not be intuitive about the case() function is that the logical expression, result pairs need not be based on a set of similar criteria.

      The most common construction usually looks something like

      case(amt1,2.....

      but it is permissible and sometimes desirable to use something like

      case(color = "Green",0,name = "Smith",1,weight > 100,2.....


      where you select the result based on wildly differing criteria. This can be especially useful in creating sort order expressions, the above would sort records where color = "Green" to the top, "Smith"'s next, etc.
      There can be only one.

      Comment


        #4
        RE: Function/case

        Hi Cal,

        I have been under the impression that in XBASIC, that there is no
        limit. Hence I was assuming that a function is in XBASIC and therefor
        is not limited. Is my assumption incorrect?

        efs

        Comment


          #5
          RE: Function/case

          Stan - for multiple case's i'ts much easier, and far more readable, to use SELECT - case - END SELECT.

          Lowell

          Comment


            #6
            RE: Function/case

            It seems we're mixing the select.....case statement used in xbasic programming with the case() function. Although similar, they have different uses. The select....case statement is used to branch xbasic programs to different actions depending on the outcome. The case() function is used in expressions to choose records for display or printing (and probably other things I can't think of right now).

            The select.....statement can have any number of choices leading to any number of possible actions. The case() function is limited to 16 pair of logical statements and outcomes and is further limited by the maximun length of a function statement (which I think is 256 characters).

            Comment

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