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#Regex for number canhave decimals and commas android#
Matches = re.finditer(regex, test_str, re. The value can have either a dot or a comma as the decimal separator The maximum number of digits before the decimal separator is 8 The maximum number of digits after the decimal separator is 3 This is the regex ive written but it somehow doesnt seem to work.Im writing this inside a Inputfilter in android and matcher.matches() returns true. The regex is built in order that it can detect the numbers expressed in scientific notation 2E10 or even 5,22,454.12E-00.0478, removing unnecessary zeros in the two parts of such numbers too.
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For instance, we can write: const str (1234567890).toLocaleString () console.log (str) We call toLocaleString directly on the number that we want to format. Test the capturing groups with re.finditer import re The toLocaleString method lets us format a number to a string with commas as thousands separators automatically. The reason is regex deals with text only and not numbers, hence you have to take a little care while dealing with numbers and number ranges or numeric If you want to learn Regex for Numbers and any Number Range with logic and Simple & Practical Examples, I will suggest you to see this simplePython - regular expression to match comma separated. Other than that, you have some capturing groups that I'm guessing you'd like to keep those. Your expression looks just fine, maybe we would slightly modify that to: ^?((\d+(\.\d+)?)|(\.\d+))$įor failing these samples, 3., 4., for instance, just in case maybe such samples might be undesired.