ReactiveX - CombineLatest operator

when an item is emitted by either of two Observables, combine the latest item emitted by each Observable via a specified function and emit items based on the results of this function The CombineLatest operator behaves in a similar way to Zip, but while Zip emits items only when each of the zipped source Observables have emitted a previously unzipped item, CombineLatest emits an item whenever any o

[ledsun]

二つのイベントの最新のもの同士を見たいときに使う