alphanumericRegex top-level property
Regex to check a string contains only letters or digits Note that spaces are counted as alphanumeric
For example:
alphanumericRegex.hasMatch('6+bird')->falsealphanumericRegex.hasMatch('move 21')->truealphanumericRegex.hasMatch('switch4.1')->true
Implementation
final alphanumericRegex = RegExp(r'^[\w\d. ]+$');