Type
isNumeric
static bool isNumeric(String? string)
The 'isNumeric' method checks if 'string' is numeric by attempting to parse it as a double.
Infinity and NaN are not treated as numbers.
Strings.isNumeric('abc');
-> false
Strings.isNumeric('1234');
-> true
If null is passed the 'string' is treated as an empty string and 'false' is returned.
extension
The 'isNumeric' method is available as an extension to the String class
'ABCD'.isNumeric();
-> false
Last updated
Was this helpful?