捷克布拉格
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枪手已被打死 造成数人死亡？
@CCTV国际时讯 消息，据路透社报道，当地时间21日，捷克布拉格市中心的一所学校发生枪击事件，当地警方在社交媒体发布消息称目前已有人员伤亡，但没有说明其他细节。[详细]
2023-12-22 07:20 分类：问答How do I get ActiveRecord to show the next id (last + 1) in Ruby on Rails?
Is there a compact way with ActiveRecord to query for what id it\'s going to use next if an object was going to be p开发者_如何学Pythonersisted to the database? In SQL, a query like this would look so[详细]
2022-12-28 17:41 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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