/Dart/Flutter check if string is number

Flutter check if string is number

Flutter check if string is number

bool isNumeric(String s) {
 if (s == null) {
   return false;
 }
 return double.tryParse(s) != null;
}

5

Source: stackoverflow.com

Similar codes

1 vote188 views1 answer
Dart bool
Dart
0 vote178 views1 answer
Crossaxisalignment.stretch row in column flutter
Dart
3 votes150 views1 answer
Flutter textfield change underline color
Dart
11 votes174 views3 answers
Dart touppercase
Dart
3 votes161 views2 answers
Flutter chip
Dart
1 vote184 views1 answer
Flutter await http.get timeout
Dart
8 votes180 views1 answer
Dart datetime parse
Dart
4 votes167 views1 answer
Dart convert string to datetime
Dart
-1 vote186 views1 answer
Flutter component position absolute
Dart
-1 vote184 views1 answer
Type '_InternalLinkedHashMap<DateTime, int>' is not a subtype of type 'Map<DateTime, double>'
Dart

Share