Is there a regex flavor that allows me to count the number of repetitions matched by the * and + operators?

Question

Is there a regex flavor that allows me to count the number of repetitions matched by the * and + operators? I\'d specifically like to know if it\'s

Answer 1

You can use parentheses in the expression to create a group and then use the + or * operator on the group. The Captures property of the Group can be used to determine how many times it was matched. The following example counts the number of consecutive lower-case letters at the start of a string:

var regex = new Regex(@"^([a-z])+");
var match = regex.Match("abc def");

if (match.Success)
{
    Console.WriteLine(match.Groups[1].Captures.Count);
}