combineReducers.js里面
combineReducers.js
export default (reducers: Object, getDefaultState: ?Function = Immutable.Map): Function => {}
这句定义函数怎么理解?冒号什么意思?
getDefaultState:?Function = Immutable.Map这句又是什么意思?
getDefaultState:?Function = Immutable.Map
偶然的你
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