potatotips #56 (iOS/Android開発Tips共有会)

by shogo.yamada

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Copyright © ZOZO Technologies, Inc. All Right Reserved. ,PUMJO$PSPVUJOFͬͯͳʹʁʁ XJLJQFEJBͰ$PSPVUJOFΛݕࡧ͢Δͱ αϒϧʔνϯ͕ΤϯτϦʔ͔ΒϦλʔϯ·ͰΛҰͭͷॲཧ୯Ґͱ͢Δͷʹର ͠ɺίϧʔνϯ͸͍ͬͨΜॲཧΛதஅͨ͠ޙɺଓ͖͔ΒॲཧΛ࠶։Ͱ͖Δɻ ઀಄ࣙDP͸ڠௐΛҙຯ͢Δ͕ɺෳ਺ͷίϧʔνϯ͕தஅɾܧଓʹΑΓڠௐ ಈ࡞Λߦ͏͜ͱʹΑΔɻ

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Copyright © ZOZO Technologies, Inc. All Right Reserved. ࢖͍ํ 5JNFPVU fun main() = runBlocking { //sampleStart withTimeout(1300L) { repeat(1000) { i -> println("I'm sleeping $i ...") delay(500L) } } //sampleEnd }

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࢖͍ํ ଴ͪ߹Θͤ fun main() = runBlocking { //sampleStart val time = measureTimeMillis { println("The answer is ${concurrentSum()}") } println("Completed in $time ms") //sampleEnd } suspend fun concurrentSum(): Int = coroutineScope { val one = async { doSomethingUsefulOne() } val two = async { doSomethingUsefulTwo() } one.await() + two.await() } suspend fun doSomethingUsefulOne(): Int { delay(1000L) // pretend we are doing something useful here return 13 } suspend fun doSomethingUsefulTwo(): Int { delay(1000L) // pretend we are doing something useful here, too return 29 }

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Copyright © ZOZO Technologies, Inc. All Right Reserved. // retorofit implementation 'com.jakewharton.retrofit:retrofit2-kotlin-coroutines-adapter:0.9.2' // coroutines implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.0.1" implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.0.1" ˞,PUMJO͔ΒͷઃఆͰ͢ ઃఆ "OESPJEͰͲ͏࢖͏ͷ͔

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Copyright © ZOZO Technologies, Inc. All Right Reserved. fun getUserInfo() = Retrofit.Builder() .baseUrl(MainService.baseUrl) .addConverterFactory(MoshiConverterFactory.create()) .addCallAdapterFactory(CoroutineCallAdapterFactory()) .build().create(MainService::class.java) } 3FUSPpUͱҰॹʹ࢖͏ "OESPJEͰͲ͏࢖͏ͷ͔

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Copyright © ZOZO Technologies, Inc. All Right Reserved. "OESPJEͰͲ͏࢖͏ͷ͔ GlobalScope.launch { val info = repository.getUserInfo() val userRequest = info.getUser() val userResponse = userRequest.await() if (!userResponse.isSuccessful) { ɹɹɹɹɹɹɹɹɹ// ΤϥʔॲཧΛ࣮ߦ͢Δ return@launch } userModel.set(userResponse.body() ?: return@launch) } 3FUSPpUͱҰॹʹ࢖͏