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Trouble with if statement evaluating multiple logical variables. Noob

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  • Trouble with if statement evaluating multiple logical variables. Noob

    I have a file conversion program with multiple 5 logical variables that I want to test. If any one of the variables are true I want the routine to run, if none are true I want to skip the code.

    The variables are initialized in a master program as global, a form acts on the variables and then launches code to perform the operation. My declarations are as follows.

    DIM GLOBAL gl_deleteEagle AS l = .f.
    DIM GLOBAL gl_deleteKilly AS l = .f.
    DIM GLOBAL gl_deleteRegal AS l = .f.
    DIM GLOBAL gl_deleteSummit AS l = .f.
    DIM GLOBAL gl_deleteWoodstone AS l = .f.

    If I only operate on one of the variables the routine triggers and runs such as follows:

    if gl_deleteEagle
    do stuff
    end if

    I have changed out the variables and they all work indivicually

    I want to get something like this to work

    if gl_deleteEagle .OR. gl_deleteKilly .OR. gl_deleteRegal .OR. gl_deleteSummit .OR. gl_deleteWoodstone

    end if

    The above code throws errors. I have tried
    if gl_deleteEagle = .T. .OR. gl_deleteKilly = .T. .OR. gl_deleteRegal=.T. .OR. gl_deleteSummit=.T. .OR. gl_deleteWoodstone=.T.
    if (gl_deleteEagle = .T. .OR. gl_deleteKilly = .T. .OR. gl_deleteRegal=.T. .OR. gl_deleteSummit=.T. .OR. gl_deleteWoodstone=.T.)
    if gl_deleteEagle == .T. .OR. gl_deleteKilly == .T. .OR. gl_deleteRegal==.T. .OR. gl_deleteSummit==.T. .OR. gl_deleteWoodstone==.T.

    I have tried adding Then at the end and other permutations. I know this is a really simple issue to solve but I have been banging my head against this and am very frustrated. I have coded for over 20 years in a couple of other languages which just adds insult to injury.

    Will someone kindly point out the very simple solution that I have been missing.

  • #2
    Re: Trouble with if statement evaluating multiple logical variables. Noob

    What exactly are the errors that you get? Your desired code should work so there must be something else at play.

    Code:
    if gl_deleteEagle .OR. gl_deleteKilly .OR. gl_deleteRegal .OR. gl_deleteSummit .OR. gl_deleteWoodstone
    'do something
    end if

    Lenny Forziati
    Vice President, Internet Products and Technical Services
    Alpha Software Corporation

    Comment


    • #3
      Re: Trouble with if statement evaluating multiple logical variables. Noob

      I get the following error
      Script:GERCConversion line 129
      if gl_deleteEagle .OR. gl_deleteKilly .OR. gl_deleteRegal .OR. gl_deleteSummit

      gl_deleteEagle.OR.gl_deleteKilly: Argument is incorrect data type

      This only happens when I add the .OR. and evaluate multiple variables.

      I have tested all variables individually and there is no problem evaluating them as logical varibles one at a time.
      Last edited by compman2; 09-06-2017, 11:09 AM.

      Comment


      • #4
        Re: Trouble with if statement evaluating multiple logical variables. Noob

        Try this.

        If it is absolutely necessary or not I am not sure but I have found that you run into less trouble if you put "then" at the ind if any "if" statement that is looking for a condition.

        Code:
        DIM GLOBAL gl_deleteEagle AS l = .f.
        DIM GLOBAL gl_deleteKilly AS l = .f.
        DIM GLOBAL gl_deleteRegal AS l = .f.
        DIM GLOBAL gl_deleteSummit AS l = .f.
        DIM GLOBAL gl_deleteWoodstone AS l = .f.
        
        'for testing
        debug(1)
        gl_deleteSummit = .T.
        
        'Now see which is true
        if gl_deleteEagle then
            'do this
             ui_msg_box("Delete Eagle","Done",UI_OK)
        else if gl_deleteKilly then
        	'do this
         	 ui_msg_box("Delete Killy","Done",UI_OK)
        else if gl_deleteRegal then
        	'do this
        	 ui_msg_box("Delete Regal","Done",UI_OK)
        else if gl_deleteSummit then
        	'do this
        	 ui_msg_box("Delete Summit","Done",UI_OK)
        else if gl_deleteWoodstone then
        	'do this			    
        	 ui_msg_box("Delete Woodstone","Done",UI_OK)
        end if

        Comment


        • #5
          Re: Trouble with if statement evaluating multiple logical variables. Noob

          As Lenny said, there must be some other issue. Construction works fine for me.

          Code:
          DIM GLOBAL gl_deleteEagle AS l = .f.
           DIM GLOBAL gl_deleteKilly AS l = .f.
           DIM GLOBAL gl_deleteRegal AS l = .f.
           DIM GLOBAL gl_deleteSummit AS l = .f.
           DIM GLOBAL gl_deleteWoodstone AS l = .f.
          
          ? gl_deleteEagle .OR. gl_deleteKilly .OR. gl_deleteRegal .OR. gl_deleteSummit .OR. gl_deleteWoodstone
          = .F.
          immediately prior to the if you could insert

          Code:
          showvar(gl_deleteEagle)
          showvar(gl_deleteKilly)
          showvar(gl_deleteRegal)
          showvar(gl_deleteSummit)
          showvar(gl_deleteWoodstone)
          to see the values or use

          Code:
          trace.WriteLn("gl_deleteEagle is " +convert_type(gl_deleteEagle,"C"))
          trace.WriteLn("gl_deleteKilly is " +convert_type(gl_deleteKilly,"C"))
          trace.WriteLn("gl_deleteRegal is " +convert_type(gl_deleteRegal,"C"))
          trace.WriteLn("gl_deleteSummit is " +convert_type(gl_deleteSummit,"C"))
          trace.WriteLn("gl_deleteWoodstone is " +convert_type(gl_deleteWoodstone,"C"))
          and check the trace window.
          Last edited by Stan Mathews; 09-06-2017, 11:37 AM.
          There can be only one.

          Comment


          • #6
            Re: Trouble with if statement evaluating multiple logical variables. Noob

            As a good practice instead of

            DIM GLOBAL gl_deleteEagle AS l = .f.


            I use this

            DIM GLOBAL gl_deleteEagle AS L
            gl_deleteEagle = .f.

            You are probably changing the value of the variable depending on some other logic and the initial statement you have treats the variable like a constant rather than a changeable variable.

            At least my old mind remembers something like that..

            This is a good example of where to use debug(1) to help with finding the issue with the coding.

            Don't leave home without debug(1)....
            Al Buchholz
            Bookwood Systems, LTD
            Weekly QReportBuilder Webinars Thursday 1 pm CST

            Occam's Razor - KISS
            Normalize till it hurts - De-normalize till it works.
            Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
            When we triage a problem it is much easier to read sample systems than to read a mind.
            "Make it as simple as possible, but not simpler."
            Albert Einstein

            http://www.iadn.com/images/media/iadn_member.png

            Comment


            • #7
              Re: Trouble with if statement evaluating multiple logical variables. Noob

              You have posted in the desktop area. You may want to ask your question in one of the Web/Mobile areas.
              There can be only one.

              Comment


              • #8
                Re: Trouble with if statement evaluating multiple logical variables. Noob

                I like to simplify long conditional statements. Play with this.
                Code:
                DIM gl_deleteEagle AS l = .f.
                DIM gl_deleteKilly AS l = .f.
                DIM gl_deleteRegal AS l = .f.
                DIM gl_deleteSummit AS l = .t.
                DIM gl_deleteWoodstone AS l = .f.
                
                dim vL as C
                vL=<<%l%
                gl_deleteEagle
                gl_deleteKilly
                gl_deleteRegal
                gl_deleteSummit
                gl_deleteWoodstone
                %l%
                
                dim veval_var_val as C=""
                for each foo in vL
                	veval_var_val=veval_var_val+convert_type(eval(foo),"C")
                next
                
                if "true" $ veval_var_val
                	msgbox("one is true")
                else
                	msgbox("none are true")
                end if
                Mike W
                __________________________
                "I rebel in at least small things to express to the world that I have not completely surrendered"

                Comment


                • #9
                  Re: Trouble with if statement evaluating multiple logical variables. Noob

                  As Leny said, there might be something else, but if each one individually works, then you could do :
                  Code:
                  Select  
                  case gl_deleteEagle = .t.
                  ...do something..
                  
                  case gl_deleteKilly  = .t.
                  ...do something..
                  
                  ...same for the rest of the variables..
                  end selcet
                  or you could do an embedded if statment:
                  Code:
                  if gl_deleteEaglel = .t.
                  ...do something..
                  else if gl_deleteKilly  = .t.
                  ...do something..
                  .........
                  end if

                  Comment

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