Dart then

await can be used on its own with JavaScript modules. Note: The purpose of async / await is to simplify the syntax necessary to consume promise-based APIs . The behavior of async / await is similar to combining generators and promises. Async functions always return a promise.

When you await an asynchronous function, the execution of the code within the caller suspends while the async operation is executed. When the operation is completed, the value of what was awaited is contained within a Future object. Take a look at the simple program below.

Advertisements. An asynchronous operation executes in a thread, separate from the main application thread . When an application calls a method to perform an operation asynchronously, the application can continue executing while the asynchronous method performs its task.

await is meant to interrupt the process flow until the async method has finished . then however does not interrupt the process flow (meaning the next instructions will be executed) but enables you to run code when the async method is finished.4 Şub 2019