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Other 2022-03-16 18:10:11
flutter regex validation
You could make the first part optional matching either a + or 0 followed by a 9. Then match 10 digits: ^(?:[+0]9)?[0-9]{10}$ ^ Start of string (?:[+0]9)? Optionally match a + or 0 followed by 9 [0-9]{10} Match 10 digits $ End of string Regex demo Add solution