root/lib/lists.py @ 4234
| 1 | 1883 | aaronmk | # Lists
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| 2 | |||
| 3 | 2962 | aaronmk | def is_seq(value): |
| 4 | return (isinstance(value, list) or isinstance(value, tuple) |
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| 5 | or isinstance(value, set)) |
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| 6 | 2415 | aaronmk | |
| 7 | 2963 | aaronmk | def mk_seq(value): |
| 8 | if not is_seq(value): value = [value] |
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| 9 | return value |
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| 10 | |||
| 11 | 2669 | aaronmk | def clear(list_): |
| 12 | while True: |
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| 13 | try: list_.pop() |
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| 14 | except IndexError: break |
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| 15 | |||
| 16 | 2415 | aaronmk | def uniqify(list_): |
| 17 | 2699 | aaronmk | '''Removes duplicates from an iterable. Preserves order.'''
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| 18 | 2415 | aaronmk | existing = set() |
| 19 | new_list = [] |
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| 20 | for value in list_: |
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| 21 | if value not in existing: |
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| 22 | existing.add(value) |
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| 23 | new_list.append(value) |
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| 24 | return new_list |