splice()

Modify the contents of `array` by inserting elements starting at index `start` and removing `delete_count` number of elements after.

Implementation

Args: array: List to splice. start: Start to splice at. delete_count: Number of items to remove starting at `start`. If ``None`` then all items after `start` are removed. Defaults to ``None``. items: Elements to insert starting at `start`. Each item is inserted in the order given. Returns: The removed elements of `array` or the spliced string. Warning: `array` is modified in place if ``list``.

Example

                            array = [1, 2, 3, 4]
splice(array, 1)
                        

Expected output: [2, 3, 4]

Alternative usage:

array

Expected output: [1]

Source Code

                        def splice(
    array: Union[List[T], str],
    start: int,
    delete_count: Optional[int] = None,
    *items: Any,
) -> Union[List[T], str]:
    # List handling
    if isinstance(array, list):
        length = len(array)
        s = start if start >= 0 else max(length + start, 0)
        d = delete_count if delete_count is not None else length - s
        removed = array[s : s + d]
        array[s : s + d] = list(items)
        return removed
    # String handling
    text: str = array  # type: ignore
    length = len(text)
    s = start if start >= 0 else max(length + start, 0)
    d = delete_count if delete_count is not None else length - s
    return text[:s] + "".join(items) + text[s + d :]
                    