[英]Get number of items in a ReplaySubject with Array Element
我必须像这样在我的项目中使用ReplaySubject:
let myVariable = ReplaySubject<[MyItems]>.create(bufferSize: myBufferSize)
如何获得“ MyItems”数组中的项目数?
只需将数组映射到其计数即可:
let countObservable = myVariable.map { $0.count }
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