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Turning Scripts into UDF's

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    Turning Scripts into UDF's

    I have created a few simple UDF's for common tasks like opening forms or adding new records, and I know many here find these a great aid in scripting - so I am wondering what sorts of tasks have others turned into UDF's? I am looking for some ideas here... and perhaps we could share our favorite ones and mention how we use them?

    Most of mine were written in 4.5 when things were simpler ;)
    Last edited by MoGrace; 04-21-2007, 11:34 AM.
    Robin

    Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

    #2
    Re: Turning Scripts into UDF's

    Here's one I use to open a form with a query on one of the tables that the user can drop with the Show_All() button on the toolbar.

    Code:
     
    FUNCTION Q_Frm as L(frm_name as C,tbl_name as C,q_filt as C,q_ord as C = "NULL_VALUE()")
    [COLOR=navy]'Ex: Q_frm("In Stock List","Yarn_Item","CUSTID = '"+get_custid+"'","")[/COLOR]
    [COLOR=navy]'if no index is specified RECNO() order will be used, use "" to specify no order[/COLOR]
    [COLOR=navy]'note global variable get_custid must be declared  and assigned a value first[/COLOR]
    [COLOR=navy]'to use in filter expression[/COLOR]
     DIM shared frm as P
     DIM tbl as P
     trace.writeln("' Query Form: "+frm_name)
     frm = obj(frm_name)
     IF .not. is_object(frm) THEN
      frm = :form.load(frm_name)
     END IF
     query.description = "Q_Form"
     query.filter = q_filt
     trace.writeln("' Q Filter: "+q_filt)
     query.order = q_ord
     [COLOR=navy]'force to create a new query[/COLOR]
     query.options = "M" 
     [COLOR=navy]'allow user to show all records in form[/COLOR]
     idx = eval("frm:tables:"+tbl_name+".query_create()")
     recs = idx.records_get()
     trace.writeln("' Records found: "+ltrim(str(recs)))
     trace.writeln("'---------------")
     IF recs <1 THEN
      cr = chr(13)+chr(10) [COLOR=navy]'can use function crlf() instead[/COLOR]
      msg1 = "No records were found that match your criteria"+cr
      msg2 = "Do you want to display all records?"
      msg_str = msg1+msg2
      response =  ui_msg_box("Query Result",msg_str,3+32)
      SELECT
       CASE response = 2
        idx.drop()
        frm.close()
        GOTO ENDIT
       CASE response = 6
        frm.show_all()
      END SELECT
     END IF
     frm.resynch()
     frm.show()
     frm.activate()
     [COLOR=navy]'---------------[/COLOR]
     ENDIT:
     [COLOR=navy]'---------------[/COLOR]
     END
    END FUNCTION
    Robin

    Discernment is not needed in things that differ, but in those things that appear to be the same. - Miles Sanford

    Comment


      #3
      Re: Turning Scripts into UDF's

      Hi Robin,

      Much of what you are looking for is located in the code archive section of the forum message board. Some of my more recent contributions that have good examples or techniques in them are

      HTTP Status codes to Descriptions
      Clean up messy phone format
      Conversion to Roman Numerals
      AgeMonths
      Min, Max code of up to 10 values, any type

      There are also many code pieces and functions scattered throughout the forum areas provided by many contributers.
      Regards,

      Ira J. Perlow
      Computer Systems Design


      CSDA A5 Products
      New - Free CSDA DiagInfo - v1.39, 30 Apr 2013
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      Comment


        #4
        Re: Turning Scripts into UDF's

        bump
        Dave Mason
        [email protected]
        Skype is dave.mason46

        Comment


          #5
          Re: Turning Scripts into UDF's

          Robin,

          It may be of interest to know that when we were doing clipper, if you used the same code more than 2 places, you made a udf. Functions were a way of life in clipper and those functions were actually bought, sold and traded like any commodity.

          It seems more and more like Alpha is developing toward a function oriented program with the strength of xbasic get better with each new release. There are some really great functions being used out there and it would be nice if people shared some of them in this code part of the forum.

          Dave Mason
          Dave Mason
          [email protected]
          Skype is dave.mason46

          Comment

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