Function unique

pattern/text/tree.py:80–84

Returns a list copy in which each item occurs only once (in-order).

(iterable)

    return find(lambda x: x in iterable1, iterable2) is not None

def unique(iterable):
    """ Returns a list copy in which each item occurs only once (in-order).
    """
    seen = set()
    return [x for x in iterable if x not in seen and not seen.add(x)]

class Map(list):
    """ A stored imap() on a list.