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Merge Array in ASP classic

I am working on an array_merge function for ASP classic. It seems like I'm working until one (or both) of the parameter is empty or arrays. Here is what I still have:

function array_merge(left, right)
  dim total_size
  dim i
  dim merged
  ' Convert "left" to an array
  if not isArray(left) then
    left = Array(left)
  end if
  ' Convert "right" to an array
  if not isArray(right) then
    right = Array(right)
  end if
  ' Start with "left" and add the elements of "right"
  right_size = ubound(right)
  total_size = ubound(left) + right_size + 1
  merged = left
  redim preserve merged(total_size)
  for i = 0 to ubound(right)
    merged(right_size + i + 1) = right(i)
  next
  ' Return value
  array_merge = merged
end function

I get an error message:

Error Type:
Microsoft VBScript runtime (0x800A01B6)
Object doesn't support this property or method: 'merged'
/_inc/nav/left-nav.inc, line 21

From the line merged(right_size + i + 1) = right(i). Any wisdom about where I am going wrong?

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3 answers

LittleBobbyTables is right, you have to change the settings.

I think that depending on your inputs an additional object check may solve your problem.

function array_merge(left, right)
  dim right_size
  dim total_size
  dim i
  dim merged
  ''// Convert "left" to an array
  if not isArray(left) then
    left = Array(left)
  end if
  ''// Convert "right" to an array
  if not isArray(right) then
    right = Array(right)
  end if
  ''// Start with "left" and add the elements of "right"

  right_size = ubound(right)
  total_size = ubound(left) + right_size + 1

  merged = array()
  redim merged(total_size)
  dim counter : counter = 0

  for i = lbound(left) to ubound(left)
    if isobject(left(i))then
        set merged(counter) = left(i)
    else
        merged(counter) = left(i)
    end if
    counter=counter+1
  next

  for i = lbound(right) to ubound(right)
    if isobject(right(i))then
        set merged(counter) = right(i)
    else
        merged(counter) = right(i)
     end if
  next


  ''// Return value
  array_merge = merged
end function

Some test codes:

dim a: a=100
dim b: b=200

dim c: set c=nothing
dim d: set d=nothing

dim e: set e=server.createobject("scripting.filesystemobject")
dim f: set f=server.createobject("scripting.filesystemobject")


dim x,y,z,zz

x = array_merge(a,b)
y = array_merge(c,d)
z = array_merge(e,f)
zz = array_merge(a,e)

response.write x(0)
response.write x(1)

''// Accessing Nothing Values throw Error
''//response.write y(0)
''//response.write y(1)

response.write z(0).GetExtensionName("test.doc")
response.write z(1).GetExtensionName("test.doc")

response.write zz(0)
response.write zz(1).GetExtensionName("test.doc")
+5

, , -, , .

FOR, . .

:

''//Build the Arrays

 Dim a,b,c
 a=array("a1","a2") : b=array("b1","b2") : c=array_merge(a,b)

''//Run the code

 For Each i In c 
    Response.Write i &"<br />"
    Next

''//The main function

 Function array_merge(arr1, arr2)
    ''//Declare all function variables
     dim arr1_size,arr2_size,total_size,i,merged,counter

    ''//Fix empty or none arrays
     if not isArray(arr1) then arr1 = Array(arr1) end if
     if not isArray(arr2) then arr2 = Array(arr2) end if

    ''// Get and set the Arrays Size
    arr1_size = ubound(arr1) : arr2_size = ubound(arr2)
    total_size = arr1_size + arr2_size    + 1

    ''//Create a temporary array and assign it a size
    merged = array()
    redim merged(total_size)
    counter = 0

    ''//Create one single Array with the two others by looping them
    For i = lbound(arr1) to ubound(arr1)
      IF isobject(arr1(i)) then
        set merged(counter) = arr1(i)
        Else
        merged(counter) = arr1(i)
        End if
      counter=counter+1
      Next
    For i = lbound(arr2) to ubound(arr2)
     If isobject(arr2(i))then
       set merged(counter) = arr2(i)
       Else
       merged(counter) = arr2(i)
       End if
       counter=counter+1
       Next

    ''// Return the value
    array_merge = merged
    End Function
0

A slight increase in effectiveness until Paolo Pta answers. No need to iterate through arr1; just “redim save” it.

Function array_merge( arr1, arr2 )
    dim arr1_size, arr2_size, total_size, i, counter
    if not isArray( arr1 ) then arr1 = Array( arr1 )
    if not isArray( arr2 ) then arr2 = Array( arr2 )

    arr1_size = ubound( arr1 ) : arr2_size = ubound( arr2 )
    total_size = arr1_size + arr2_size + 1
    counter = arr1_size + 1
    Redim Preserve arr1( total_size )
    For i = lbound( arr2 ) to arr2_size
        If isobject( arr2( i ) )then
            set arr1( counter ) = arr2( i )
        Else
            arr1( counter ) = arr2( i )
        End if
        counter = counter + 1
    Next
    array_merge = arr1
End Function
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