lastXcharacter method

String? lastXcharacter(
  1. int characterCount
)

Guvenli sekilde son x karakteri verir

Implementation

String? lastXcharacter(int characterCount) {
  if (this == null) return null;
  if (this!.length < characterCount) return this;
  return this!.substring(this!.length - characterCount, this!.length);
}