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Ex7.kt
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Ex7.kt
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/*
* Learn-Rx
*
* Copyright (c) 2021 Joseph James
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import io.reactivex.rxjava3.core.Observable
import io.reactivex.rxjava3.disposables.CompositeDisposable
import io.reactivex.rxjava3.kotlin.subscribeBy
import io.reactivex.rxjava3.subjects.BehaviorSubject
import io.reactivex.rxjava3.subjects.PublishSubject
import util.exampleOf
fun main(args: Array<String>) {
exampleOf("map") {
val disposable = CompositeDisposable()
disposable.add(
Observable.just("1", "2", "3", "4")
.map {
it.toInt()
}
.subscribeBy {
println(it)
}
)
}
exampleOf("flatMap") {
/*
* this will be very useful when you combine API calls.
*/
val disposable = CompositeDisposable()
data class O(
val data: BehaviorSubject<Int>
)
val sub1 = BehaviorSubject.createDefault(10)
val sub2 = BehaviorSubject.createDefault(10)
val mainOb = PublishSubject.create<O>()
disposable.add(
mainOb
.flatMap {
it.data
}
.subscribeBy {
println(it)
}
)
mainOb.onNext(O(sub1))
sub1.onNext(10)
sub1.onNext(30)
mainOb.onNext(O(sub2))
sub1.onNext(10)
sub1.onNext(30)
sub2.onNext(100)
sub2.onNext(300)
}
exampleOf("switchMap") {
/*
* this will be very useful when you combine API calls.
*/
val disposable = CompositeDisposable()
data class O(
val data: BehaviorSubject<Int>
)
val sub1 = BehaviorSubject.createDefault(10)
val sub2 = BehaviorSubject.createDefault(10)
val mainOb = PublishSubject.create<O>()
disposable.add(
mainOb
.switchMap {
it.data
}
.subscribeBy {
println(it)
}
)
mainOb.onNext(O(sub1))
sub1.onNext(10)
sub1.onNext(30)
mainOb.onNext(O(sub2))
sub1.onNext(10)
sub1.onNext(30)
sub2.onNext(100)
sub2.onNext(300)
}
}