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Visual Basic 2015 Unleashed
book

Visual Basic 2015 Unleashed

by Alessandro Del Sole
July 2015
Intermediate to advanced content levelIntermediate to advanced
1300 pages
87h 27m
English
Sams
Content preview from Visual Basic 2015 Unleashed

Creating Tasks That Return Values

The Task class also has a generic counterpart that you can use for creating tasks that return a value. Consider the following code snippet that creates a task returning a value of type Double, which is the result of calculating the tangent of an angle:

Dim taskWithResult = Task(Of Double).    Factory.StartNew(Function()                         Dim radians As Double _                             = 120 * Math.PI / 180                         Dim tan As Double = _                             Math.Tan(radians)                         Return tan                     End Function)

You use a Function, which represents a System.Func(Of T), so that you can return a value from your operation. ...

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Publisher Resources

ISBN: 9780134196664Purchase book