React Native unique "key" prop.

React-Native 在做map()操作的时候,需要指定map的key值,否则会报 unique "key" prop警告⚠️ 警告如下:

Warning:ExceptionsManager.js:84 Warning: Each child in an array or iterator should have a unique "key" prop.

unique "key" prop
未指定key值之前
指定key值之后

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