How to remove diacritics (accents) from a string?

Question

I\'m trying to convert some strings that are in Czech, Spanish, French etc. I\'d like to take out the accent marks in the letters while keeping the letter. (E.g. convert é t

Answer 1

Here's my adaptation of Leonardo's solution. It extends the string class for ease of use and uses SplitMapJoin instead of a for loop:

extension DiacriticsAwareString on String {
  static const diacritics =
      'ÀÁÂÃÄÅàáâãäåÒÓÔÕÕÖØòóôõöøÈÉÊËèéêëðÇçÐÌÍÎÏìíîïÙÚÛÜùúûüÑñŠšŸÿýŽž';
  static const nonDiacritics =
      'AAAAAAaaaaaaOOOOOOOooooooEEEEeeeeeCcDIIIIiiiiUUUUuuuuNnSsYyyZz';

  String get withoutDiacriticalMarks => this.splitMapJoin('',
      onNonMatch: (char) => char.isNotEmpty && diacritics.contains(char)
          ? nonDiacritics[diacritics.indexOf(char)]
          : char);
}