isNumber property

bool? isNumber

Checks whether the String is a number.

Example

String foo = '45';
bool isNumber = foo.isNumber; // returns true

String foo = '45s';
String isNumber = foo.isNumber; // returns false

Implementation

bool? get isNumber {
  if (this == null) return null;
  if (this!.isEmpty) return false;
  return num.tryParse(this!) != null;
}