On 19.09.2011 at 15:30 Uhr -0500 Tereza Snyder apparently wrote:
I recently encountered a problem implementing an undo function in a
script. I needed to compare two arrays to see if any values had
changed, like this:
put (tArray1 <> tArray2) into sDirtyFlag
so that sDirtyFlag would be true when the arrays failed to match.
However, sDirtyFlag was always false! No matter what!
I put the two arrays into globals and compared them in the message
box, like this:
put (gArray1 = gArray2), and the result was always correct. I
thought there was some hidden horrible error in my script that
dementia prevented me from seeing, until I realized that in my
script I was using "<>" not "=" to compare.
I think you want to compare the keys and the content for each key
among the arrays. Unless I missed on some new feature in most recent
livecodes, tArray always gives empty so comparing two arrays this way
will always give same result when matching, exactly as you observed.
Robert
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