isUnique method

bool isUnique()

Checks whether the String is consisted of only unique characters.

Returns true String if the String is empty.

Example

String foo = 'Hello World';
bool isUnique = foo.isUnique; // returns false;

String foo = 'hello world';
bool isUnique = foo.isUnique; // returns true;

Implementation

bool isUnique() {
  if (this.isBlank) {
    return true;
  }
  final word = this;
  final wordSplit = word.toGreekUpperCase()!.split('').toSet();
  return word!.length == wordSplit.length;
}