removeLetters property
String?
removeLetters
Removes only the letters from the String.
Example 1
String foo = 'es4e5523nt1is';
String noLetters = foo.removeLetters; // returns '455231'
Example 2
String foo = '1244e*s*4e*5523n*t*1i*s';
String noLetters = foo.removeLetters; // returns '1244**4*5523**1*'
Implementation
String? get removeLetters {
if (this == null) return null;
if (this!.isEmpty) return this;
final regex = RegExp('([a-zA-Z]+)');
return this!.replaceAll(regex, '');
}