If an array is empty, it looks like you can’t check it’s length using “.length”. What’s the best way to check if an array is empty?
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If an array is empty, it looks like you can’t check it’s length using “.length”. What’s the best way to check if an array is empty?
You can absolutely check an empty array’s length. However, if you try to do that on a null reference you’ll get an exception. I suspect that’s what you’re running into. You can cope with both though:
If that isn’t the cause, please give a short but complete program demonstrating the problem. If that was the cause, it’s worth taking a moment to make sure you understand null references vs “empty” collections/strings/whatever.