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Issue 27412003: runAsync name change (Closed) Base URL: https://github.com/dart-lang/dartlang.org.git@master
Patch Set: Created 7 years, 2 months ago
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1 --- 1 ---
2 layout: default 2 layout: default
3 title: "The Event Loop and Dart" 3 title: "The Event Loop and Dart"
4 description: "Learn how Dart handles the event queue and microtask queue, so you can write better asynchronous code with fewer surprises." 4 description: "Learn how Dart handles the event queue and microtask queue, so you can write better asynchronous code with fewer surprises."
5 rel: 5 rel:
6 author: kathy-walrath 6 author: kathy-walrath
7 has-permalinks: true 7 has-permalinks: true
8 article: 8 article:
9 written_on: 2013-09-30 9 written_on: 2013-09-30
10 collection: performance 10 collection: performance
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209 ## How to schedule a task 209 ## How to schedule a task
210 210
211 When you need to specify some code to be executed later, 211 When you need to specify some code to be executed later,
212 you can use the following APIs provided by the dart:async library: 212 you can use the following APIs provided by the dart:async library:
213 213
214 1. The **Future** class, 214 1. The **Future** class,
215 which adds an item to the end of the **event queue**. 215 which adds an item to the end of the **event queue**.
216 1. The top-level **runAsync()** function, 216 1. The top-level **runAsync()** function,
217 which adds an item to the end of the **microtask queue**. 217 which adds an item to the end of the **microtask queue**.
218 218
219 <aside class="alert alert-warning" markdown="1">
220 **Note:**
221 **runAsync()** is being renamed to **scheduleMicrotask().**
sethladd 2013/10/16 15:43:50 this might show up today. should we just change th
222 (See the [announcement](https://groups.google.com/a/dartlang.org/forum/#!msg/mis c/7sAIhWXfIKQ/PzYJy1QqtWUJ).)
223 We'll update the text and figures soon.
224 </aside>
225
219 Examples of using these APIs are in the next section under 226 Examples of using these APIs are in the next section under
220 [Event queue: new Future()](#event-queue-new-future) and 227 [Event queue: new Future()](#event-queue-new-future) and
221 [Microtask queue: runAsync()](#microtask-queue-runasync). 228 [Microtask queue: runAsync()](#microtask-queue-runasync).
222 229
223 ### Use the appropriate queue (usually: the event queue) 230 ### Use the appropriate queue (usually: the event queue)
224 231
225 Whenever possible, schedule tasks on the event queue, with Future. 232 Whenever possible, schedule tasks on the event queue, with Future.
226 Using the event queue helps keep the the microtask queue short, 233 Using the event queue helps keep the the microtask queue short,
227 reducing the likelihood of the microtask queue starving the event queue. 234 reducing the likelihood of the microtask queue starving the event queue.
228 235
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593 avoid compute-intensive tasks on either event loop. 600 avoid compute-intensive tasks on either event loop.
594 * To perform compute-intensive tasks, 601 * To perform compute-intensive tasks,
595 create additional isolates or workers. 602 create additional isolates or workers.
596 603
597 As you write asynchronous code, you might find these resources helpful: 604 As you write asynchronous code, you might find these resources helpful:
598 605
599 * [Using Future Based APIs](/articles/using-future-based-apis/) 606 * [Using Future Based APIs](/articles/using-future-based-apis/)
600 * [Futures and Error Handling](/articles/futures-and-error-handling/) 607 * [Futures and Error Handling](/articles/futures-and-error-handling/)
601 * [dart:async - Asynchronous Programming](/docs/dart-up-and-running/contents/ch0 3.html#ch03-asynchronous-programming) section of the library tour 608 * [dart:async - Asynchronous Programming](/docs/dart-up-and-running/contents/ch0 3.html#ch03-asynchronous-programming) section of the library tour
602 * [dart:async API reference](http://api.dartlang.org/dart_async.html) 609 * [dart:async API reference](http://api.dartlang.org/dart_async.html)
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