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count++;
if (count > 1)
{
    result.Append(", ");
    if (count == list.Count)
        result.Append("or ");
}

private static ParseNode _ParseBoolean(ParserContext context) {
       ParseNode result = null;
       if ((JsonParser.@true == context.SymbolId)) {
           // Boolean -> true
           ParseNode[] children = new ParseNode[1];
           children[0] = new ParseNode(JsonParser.@true, context.Value);
           context.Advance();
           return new ParseNode(JsonParser.Boolean, children);
       }
       if ((JsonParser.@false == context.SymbolId)) {
           // Boolean -> false
           ParseNode[] children = new ParseNode[1];
           children[0] = new ParseNode(JsonParser.@false, context.Value);
           context.Advance();
           return new ParseNode(JsonParser.Boolean, children);
       }
       context.Error("Expecting true or false");
       return null;
   }

honey the codewitch wrote:

context.Error("Expecting true or false");

M.D.V.

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var list = new HashSet<object>() { };
var result = new StringBuilder();

foreach (var item in list)
{
    if (result.Length > 0)
        result.Remove(result.Length - 3, 3);
    result.Append(item);
    result.Append(",or ");
}

return result.ToString();

Quote:

C#

else if(0==c) {
    result.Append(list[0]);
}

public static string JoinList<T>(this IEnumerable<T> list, string delimiter = ", ", string finalDelimiter = "or ")
{
    int count = list.Count();
    switch (count)
    {
        case 0:
        {
            return string.Empty;
        }
        case 1:
        {
            return Convert.ToString(list.First());
        }
        default:
        {
            int index = count;
            var result = new StringBuilder();
            foreach (var item in list)
            {
                if (result.Length != 0) result.Append(delimiter);
                if (index == 1) result.Append(finalDelimiter);
                result.Append(item);
                --index;
            }
            
            return result.ToString();
        }
    }
}

var result = new StringBuilder();
list.ForEach(item => result.Append(item).Append(item == list.Last() ? "" : item == list.Take(list.Count - 1).Last() ? ", or " : ", "));

var result = new StringBuilder();
list.ForEach(item => result.Append(item).Append(item == list.Last() ? "" : item == list.Take(list.Count - 1).Last() ? " or " : ", "));