[thelist] ASP: checking for empty array

[Anthony Baratta]

Here's my 2 cents, since I gave such a horribly wrong answer:

Test Two

     <%  Dim varTest(0), varTest1(0)
         varTest(0) = "blah"

         response.write UBound(varTest) & "<br>" & vbCRLF
         response.write UBound(varTest1) & "<br>" & vbCRLF
     %>

	Returns:

		0
		0


Test Two

     <%  Dim varTest(0), varTest1(0)
         varTest(0) = "blah"

         response.write isEmpty(varTest) & "<br>" & vbCRLF
         response.write isEmpty(varTest1) & "<br>" & vbCRLF
     %>

	Returns:
	
		False
		False

Test Three

     <%  Dim varTest(0), varTest1(0)
         varTest(0) = "blah"

         response.write isEmpty(varTest(0)) & "<br>" & vbCRLF
         response.write isEmpty(varTest1(0)) & "<br>" & vbCRLF
     %>

	Returns:
	
		False
		True

This means to me that you'll need to iterate through a loop to test all 
parts of the array.

Option One
     <%  Dim varTest(0), varTest1(0)
         varTest(0) = "blah"

         varCount = 0
         for each fld in varTest
             if isEmpty(fld) then
                 response.write "varTest - " & varCount & ": True<br>"
             else
                 response.write "varTest - " & varCount & ": False<br>"
             end if
             varCount = varCount + 1
         next

         varCount = 0
         for each fld in varTest1
             if isEmpty(fld) then
                 response.write "varTest1 - " & varCount & ": True<br>"
             else
                 response.write "varTest1 - " & varCount & ": False<br>"
             end if
             varCount = varCount + 1
         next
     %>

	Returns:
	
		varTest - 0: False
		varTest1 - 0: True


Option Two
     <%  Dim varTest(0), varTest1(0)
         varTest(0) = "blah"

         for x = 0 to UBound(varTest)
             if isEmpty(varTest(x)) then
                 response.write "varTest - " & x & ": True<br>"
             else
                 response.write "varTest - " & x & ": False<br>"
             end if
         next

         for x = 0 to UBound(varTest1)
             if isEmpty(varTest1(x)) then
                 response.write "varTest1 - " & x & ": True<br>"
             else
                 response.write "varTest1 - " & x & ": False<br>"
             end if
         next
     %>

	Returns:
	
		varTest - 0: False
		varTest1 - 0: True
---
Anthony Baratta
President
Keyboard Jockeys