root/lib/lists.py @ 3030
| 1 | 1883 | aaronmk | # Lists
|
|---|---|---|---|
| 2 | |||
| 3 | 2962 | aaronmk | def is_seq(value): |
| 4 | return (isinstance(value, list) or isinstance(value, tuple) |
||
| 5 | or isinstance(value, set)) |
||
| 6 | 2415 | aaronmk | |
| 7 | 2963 | aaronmk | def mk_seq(value): |
| 8 | if not is_seq(value): value = [value] |
||
| 9 | return value |
||
| 10 | |||
| 11 | 2669 | aaronmk | def clear(list_): |
| 12 | while True: |
||
| 13 | try: list_.pop() |
||
| 14 | except IndexError: break |
||
| 15 | |||
| 16 | 2415 | aaronmk | def uniqify(list_): |
| 17 | 2699 | aaronmk | '''Removes duplicates from an iterable. Preserves order.'''
|
| 18 | 2415 | aaronmk | existing = set() |
| 19 | new_list = [] |
||
| 20 | for value in list_: |
||
| 21 | if value not in existing: |
||
| 22 | existing.add(value) |
||
| 23 | new_list.append(value) |
||
| 24 | return new_list |