目录1. 什么是迭代器失效？2. 哪些操作会导致迭代器失效？2.1 vector 的插入操作（push_back, insert）示例：push_back 导致迭代器失效如何避免？2.2 vector 的删除操作（erase,
I need to delete all the lines on a subplot, to then redr开发者_如何学Pythonaw them (i\'m making a redraw function to be used when i add/remove some lines)
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