这个错误怎么回事呢？
Each child in an array or iterator should have a unique "key" prop. Check the render method of GalleryByReactApp. See https://fb.me/react-warning-keys for more information.
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Each child in an array or iterator should have a unique "key" prop. Check the render method of GalleryByReactApp. See https://fb.me/react-warning-keys for more information.
2016-05-09
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