compare multiple values

[krwlz101]

Basically, I have four string values that I need to compare.  If any 2 or more of them are identical, I need to send a message back to the user, asking them to change one of them, while preventing additional operations from having them.

I am sure that using enough =?, ANDs and ORs that I can accomplish this, however I feel like there must be a more simple solution.

Any thoughts?

[smercurio_fc]

If you do a search you will find that this question has come up before. One solution is to create two separate arrays from your strings and then use a for-loop to iterate through, using one array as the auto-indexer and then look for that element in the other array. Send out a Boolean value and then AND or OR (depending one which comparison you picked) the resultant Boolean array. Shouldn't be too difficult for you to code up.

[krwlz101]

That makes a lot of sense.  I had searched, but perhaps used the wrong terms, as I didn't find much.

Thanks much, I will try it out.

[Joseph_Loo]

You can use the array, do a compare which generates a boolean array. Convert the boolean array and sum it up and check if the difference is >= to 2.

[SteveChandler]

I just did something similar the other day. This is how I went about it.

[jcarmody]

The OpenG Array palette has a function to remove duplicates from a 1D array that you can use to find duplicates and their indices.

[krwlz101 · Accepted solution]

This is what I ended up doing, and it seems to work great.

[GerdW]

Hi krwlz,

one small change may result in huge speedup (for large arrays):

[krwlz101]

The speed up is due to the fact that I would not be processing a large array of booleens on the exit from the loop?

I don't actually want to stop the overall loop in the case of a duplicate, I just want to change what happens.  Is there a way to do this without the stop button?