EsAsynchronousSupport
Description
This application provides support for asynchronous programming with Futures. Futures are objects that represent a computation whose return value might not be available yet. They are often used for potentially lengthy computations such as I/O and interaction with users.
• User Objects: @see class comments for more details
• EsFuture: An object representing a delayed computation.
• EsPromise: A way to produce <EsFuture> objects and to complete them later with a value or error.
Features
• Task Scheduler:
• Specialized task scheduler that helps ensure the user has a chance to add all required exception handlers to a future before the future is completed.
• Futures:
• Objects representing a delayed computation
• Custom futures that implement the EsFuture interface may be integrated into the framework
(@see @EsFuture-Interface category)
• Turn any synchronous activity into an asynchronous activity (i.e. EsFuture on: [self doSyncActivity])
• (Chainable) Create async call chains (i.e ((future then: [:result1 | self doSomething(result1)]) then: [:result2 | ...))
• @see <EsFuture> class comments for more details
• Promises:
• Objects that provide a future and is used to programmatically complete the future.
• Can be used to convert callback style to async style
• @see <EsPromise> class comments for more details
• Async Exception Handling
• Async equivalents of #on:do: and ensure: are provided
• Can signal arbitrary objects, in addition to other exceptions
• All unhandled exceptions make their way to the <EsAsyncUncaughtErrorHandler> (logged to tty console by default)
Class Methods
None
Instance Methods
None
Last modified date: 04/21/2022