In the query below there is a field called main which is used to differentiate the categorie开发者_如何学Cs.
I have left-right trees in my database which are a problem for performance. I\'ll switch to a system with a parentId and an orderId.
I don\'t have a background in CS or data structures. I want to make a PHP class that stores a modified preorder transversal tree, for manipulation and syncing with a database.
Hello I\'m trying to get a multicolumn display (if it can be called so) with the code below here is the result:
与剑远征诗社比赛第八天答案是什么？诗歌大赛第八天，题目不是很难，但是对于一些老选手来说还是挺简单的。那么剑与远征诗歌大赛第八天的答案解释了，我们来看看细节。推荐分享诗歌大赛第八天的答案！
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