isNumber property

bool get isNumber

Returns true if all the characters are alphanumeric (alphabet letter (a-z) and numbers (0-9)).

print('111Activity'.isAlNum); // true
print('123'.isAlNum); // true
print('This@123'.isAlNum); // false

Implementation

bool get isNumber => RegExp(r'^[\p{L}\p{N}]+$', unicode: true).hasMatch(this);