ruby > 1.9

Also available in Python's re module, with a syntax that's just different enough to be irritatingly incompatible.

    >>> import re
    >>> r = re.compile(r'(?P<month>\d{1,2})\/(?P<day>\d{1,2})\/(?P<year>\d{4})')
    >>> r.search("Today's date is: 10/23/2012.").groupdict()
    {'month': '10', 'day': '23', 'year': '2012'}