Pihrtsoft.Text.RegularExpressions.Linq.Chars.Comma C# (CSharp) Method

        public static CharGrouping Comma() => Character(AsciiChar.Comma);

 /// <summary>
 /// Appends a pattern that matches a comma.
 /// </summary>
 /// <returns></returns>
 public CharGrouping Comma() => Append(Chars.Comma());