Kotlin Coroutines

前言 開發 Android 的開發者或多或少一定有遇過 ANR（Application Not Response），你知道出現 ANR 的原因嗎？主執行緒大約 16ms 更新畫面一次，而一次大約是 60 幀。當我們執行的任務太耗時，佔用太多主執行緒 (Main Thread) 的時間，那麼就會因為主執行緒一直忙著運算該耗時任務，而沒有時間更新畫面。輕者 …

In this article I’ll try to explain why coroutines are useful and why would you want to use them in your project. After we go through the most important concepts of coroutines, I’ll show you how I used coroutines to implement networking and background processing in the example project. First…

這是 Coroutines Hot Flow 系列文的最後一篇，記錄了我希望自己一開始在使用 Hot Flow 時，就能知道的事 — 也就是當時碰到的盲點與地雷們。先前已經寫了兩篇文章，第一篇介紹了 cold flow 與 hot flow 的區別，以及 hot flow 老大 — SharedFlow 的基本特性；第二篇介紹 hot flow …

Jersey is a popular framework for building RESTful web services on the JVM. At ClassPass, we make heavy use of Dropwizard, which is a web framework based on Jersey. With Jersey, requests are processed synchronously by default. In particular, each request is handled by a single thread, where the thread…

Hi there Code-lovers! 🌞 New book series coming soon! 📗📘📗 Marcin Moskała started working on 3 books called Kotlin for developers. Wanna contribute? 🤔 More information: 👇 🔎 Technical reviewers wanted 🔍 👉 Kotlin for Developers — technical reviewers wanted! 👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻👨‍💻👩‍💻 Below you can find a brief list of today’s…

A function is a sequence of instruction that take input and give us output or just do its work in sequence fun countMoney():Int{ val value = calculatedValue return value } A Thread describe in which context this sequence of instruction should be executed Thread 1 println(“t1 1”) println(“t1 2”) println(“t1 3”) println(“t1 4”)…

Reactive programming is a well-known programming paradigm widely used in various development, especially in native mobile app programming, which benefits the developers to reduce the callback process. But nowadays, Kotlin provides Coroutines — an option of concurrency design pattern for Android development. Mapping between RxKotlin and Coroutines Note: cold streams=code gets executed when they have…