[英]Immutablejs : Transform a List to a Map
I have a List and I would like to transform it to a Map 我有一个列表,我想将其转换为地图
const arr = [23,45,56,67];
const iArr = fromJS(arr);
I would like to have an Immutable like that : 我想要一个这样的不可变的:
{
23: false,
45: false,
56: false
...
}
How can I achieve this ? 我该如何实现?
Simple, use reduce
- 简单,使用reduce
var l = Immutable.List.of(23,45,56,67).reduce((map,value)=>map.set(value, false), Immutable.Map()); console.log(l.toJSON());
<script src="https://cdnjs.cloudflare.com/ajax/libs/immutable/3.8.1/immutable.min.js"></script>
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