The number of sections contained in the collection view after the update (1) must be equal to the number of sections contained in the collection view before the update (0), plus or minus the number of

【The number of sections contained in the collection view after the update (1) must be equal to the number of sections contained in the collection view before the update (0), plus or minus the number of】的更多相关文章

The number of sections contained in the collection view after the update (1) must be equal to the number of sections contained in the collection view before the update (0), plus or minus the number of

现象:当删除CollectionView 当中的某个section的时候,报上面的错误初步分析:当前CollectionView删除前后都不止一个Section,怎么会报那样的错误:猜想可能是相册界面的另外两个UICollectionView,对当前的CollectionView有影响. 初步验证:当加载了另外一个collectionView,再去删除原collectionView时并没有报错解决方案:ViewDidLoad的时候加载三个CollectionView 再次分析:按道理应该是不…

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Tree Cutting Problem Description Byteasar has a tree T with n vertices conveniently labeled with 1,2,...,n. Each vertex of the tree has an integer value vi.The value of a non-empty tree T is equal to v1⊕v2⊕...⊕vn, where ⊕ denotes bitwise-xor.Now for…

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One Person Game Time Limit: 1 Second Memory Limit: 32768 KB Special Judge There is a very simple and interesting one-person game. You have 3 dice, namely Die1, Die2 and Die3. Die1 has K1 faces. Die2 has K2 faces. Die3 has K3 faces. All the dice are f…

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One Person Game Time Limit: 1 Second Memory Limit: 32768 KB Special Judge There is a very simple and interesting one-person game. You have 3 dice, namely Die1, Die2 and Die3. Die1 has K1 faces. Die2 has K2 faces. Die3 has K3 faces. All the…