You can delete a spatial index when you no longer need it.
不再需要某个空间索引时,可以将其删除。
The trouble with advice is you seldom know whether it's good or bad until you no longer need it.
建议给人的苦恼是只有当你不再需要它时,你才知道它是好还是坏。
As soon as you no longer want what your parents have, or no longer need it, your parents have lost complete control of you.
一旦你不需要从你父母那里得到什么了,你父母对你也失去控制了。
Right? If that was the case in that code, then my complexity is no longer log, because I need linear access for each time I've got to go to the list, and it's going to Lisp be much worse than that.
这里的复杂度不再是对数的了,因为每次在列表中,查找需要线性访问,可能还要糟糕,其实,有些编程语言,如。
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