isInteger function

bool isInteger(
  1. String? s
)

Checks if the value is an integer.

Implementation

bool isInteger(String? s) {
  if (s == null) {
    return false;
  }

  RegExp regExp = RegExp(r"^-?[0-9]+$", caseSensitive: false, multiLine: false);

  return regExp.hasMatch(s);
}