regex - Range 1 to 9223372036854775807 with regular expression -
i trying working , there not quite!
i need able allow range 1
9223372036854775807
.
i have next regex:
^([1-9][0-9]{0,18}|9223372036854775807)$
that allows me come in values in range want, allows go 9999999999999999999
easy block go 9223372036854775807
?
don't utilize regex. it's inefficient, , way worse integer parsing logic can ever write.
for sake of demonstration, here go:
class="lang-regex prettyprint-override">^(?:[1-9][0-9]{0,17}|[1-8][0-9]{18}|9(?:[01][0-9]{17}|2(?:[01][0-9]{16}|2(?:[0-2][0-9]{15}|3(?:[0-2][0-9]{14}|3(?:[0-6][0-9]{13}|7(?:[01][0-9]{12}|20(?:[0-2][0-9]{10}|3(?:[0-5][0-9]{9}|6(?:[0-7][0-9]{8}|8(?:[0-4][0-9]{7}|5(?:[0-3][0-9]{6}|4(?:[0-6][0-9]{5}|7(?:[0-6][0-9]{4}|7(?:[0-4][0-9]{3}|5(?:[0-7][0-9]{2}|80[0-7]))))))))))))))))$
instead, parse integer using standard libraries of language working in, , utilize value checks instead (>
operators, et cetera).
regex
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