maximum array size

[fcb]

Is there a maximum array size?

I have an string array that seems to cause an "Array index out of bounds" error when it exceeds approx 1500x576. Each field can be a string around 5-20 charaters long.

[Demivec]

Is there a maximum array size?

I have an string array that seems to cause an "Array index out of bounds" error when it exceeds approx 1500x576. Each field can be a string around 5-20 charaters long.

Can you post a short code sample where this happens?

Here's some sample code, what does it show for you?

Code: Select all

Define colSize = 1500, rowSize = 576

Repeat
  Dim  a$(colSize, rowSize)
  a$(colSize, rowSize) = "Test assignment at string array element (" + colSize + ", " + rowSize + ")"
  Debug a$(colSize, rowSize)
  colSize + Random(3000, 1500)
  rowSize + Random(3000, 1500)
ForEver

For me, testing the above code the program seems to stall after this output:

Code: Select all

Test assignment at string array element (1500, 576)
Test assignment at string array element (4223, 3480)
Test assignment at string array element (7039, 6319)
Test assignment at string array element (9909, 9032)
Test assignment at string array element (12558, 11941)
Test assignment at string array element (15500, 14833)
Test assignment at string array element (18069, 17465)
Test assignment at string array element (21043, 20051)
Test assignment at string array element (23934, 22627)
Test assignment at string array element (26735, 25169)
Test assignment at string array element (29492, 27688)
Test assignment at string array element (32323, 30250)
Test assignment at string array element (35044, 32995)
Test assignment at string array element (37860, 35852)

With the following test code:

Code: Select all

Define colSize = 1500, rowSize = 1

Repeat
  Dim  a$(colSize, rowSize)
  a$(colSize, rowSize) = "Test assignment at string array element (" + colSize + ", " + rowSize + ")"
  Debug a$(colSize, rowSize)
  colSize + Random(3000000, 2500000)
ForEver

I get this output, before I stopped the program:

Code: Select all

Test assignment at string array element (1500, 1)
Test assignment at string array element (2531481, 1)
Test assignment at string array element (5429027, 1)
Test assignment at string array element (8397942, 1)
Test assignment at string array element (11025759, 1)
Test assignment at string array element (13557959, 1)
Test assignment at string array element (16219800, 1)
Test assignment at string array element (18784723, 1)
-------------- snipped output
...
-------------- snipped output
Test assignment at string array element (243473889, 1)
Test assignment at string array element (246152615, 1)
Test assignment at string array element (248816918, 1)
Test assignment at string array element (251799022, 1)
Test assignment at string array element (254363155, 1)
Test assignment at string array element (257175772, 1)
Test assignment at string array element (259725249, 1)
Test assignment at string array element (262584390, 1)

I don't see an immediate limitation imposed on the maximum array size.

Running PB v 5.72 b3 LTS under Windows 10 x64 with 16GB ram.

You frankly seem to have the 'Array index out of bounds' . This would be due to using an index that was too large (or too small). Check your indexes in the line where the error is against the Dim size. If it is always the same line, use CallDebugger before it and examine the array size at that time along with the indexes you used. If you ReDim the array smaller you may be using an old index value that is no longer within the bounds of the new size.

[BarryG]

Is there a maximum array size?

No.

"Array index out of bounds" error

That just means you're trying to use an index that is higher than what you Dim'ed. In other words, it's a coding error by you rather than an array limit. For example, if you used Dim(1500,576) and then tried to use index (1501,576).

[fcb]

Thank you all.

The problem was (obviously) with me and my code - now resolved. It's good to know that there isn't a built in limit, thanks for the test code.