Comparing Empty 2D Arrays

[Cy_Rybicki]

I have an application which asynchronously calls a Dynamic Dispatch VI which the user interacts with, and then compares the output class data with the input to see if the user made any changes. I discovered that when comparing empty 2D arrays, if one array originated as an empty constant and the other was from an empty 1D array built into a 2D array the equals primitive will return false. This is not the case if they are both constants or both built from empty 1D arrays so it doesn't seem to be a quirk due to the array being empty.

Is this a bug or am I missing something? I have a workaround but it's not particularly elegant. This is in LabVIEW 2017.

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[GerdW · Accepted solution]

Hi,

an array of zero rows and columns is different to an array of one row of zero columns...

This has been discussed before, search the forum!

[JICR]

It is not really a bug, If you probe your arrays you will see that the row number is not 0.

It is just annoying that LabVIEW doesn't display the detail.

If you keep adding N empty rows and then one not empty row, you will get N zero padded rows.

[Cy_Rybicki]

Thank you for responding, I did not think to check the array size.