I have an app that I need to validate that they enter either whole numbers
(1,2,3, etc.) or if they DO enter a decimal, it can only be in half increments,
so 2.5 is okay, but not 2.1, 2.2, 2.25, etc. Of course, 2.0 would be okay too,
so .0 after the number is fine.
Is there a good way to check that with Regex rather than parsing the string and
checking that the value after the period is a 5 or a 0?
Thanks,
MarieT
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