Ambient-Oriented Programming

User Tools

Site Tools

Trace:
at:tutorial:actors

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
at:tutorial:actors [2020/02/05 21:24] – elisagat:tutorial:actors [2020/02/05 21:26] (current) – elisag
Line 178: Line 178:
  
 As you may have noticed previously, asynchronous message sends do not return any value (that is, they return ''nil''). Quite often, the developer is required to work around this lack of return values by means of e.g. explicit customer objects, as shown previously in the calculator example. This, however, leads to less expressive, more difficult to understand code, where the control flow quickly becomes implicit. As you may have noticed previously, asynchronous message sends do not return any value (that is, they return ''nil''). Quite often, the developer is required to work around this lack of return values by means of e.g. explicit customer objects, as shown previously in the calculator example. This, however, leads to less expressive, more difficult to understand code, where the control flow quickly becomes implicit.
 +
  
  
Line 192: Line 193:
 def sum := calculator<-add(1,2); def sum := calculator<-add(1,2);
 </code> </code>
- 
  
  
Line 208: Line 208:
 The first statement imports the futures module into the current lexical scope. This enables you as a developer to use some additional language constructs exported by the futures module, as will be explained later. The second statement enables the futures behaviour, causing any asynchronous message send to return a future rather than ''nil''. If ''false'' is passed to the call to ''enableFutures'', only messages annotated explicitly as ''@FutureMessage'' (or as ''@TwoWay'') will return a future. The first statement imports the futures module into the current lexical scope. This enables you as a developer to use some additional language constructs exported by the futures module, as will be explained later. The second statement enables the futures behaviour, causing any asynchronous message send to return a future rather than ''nil''. If ''false'' is passed to the call to ''enableFutures'', only messages annotated explicitly as ''@FutureMessage'' (or as ''@TwoWay'') will return a future.
  
-<note important>+<note>
 In what follows we provide an overview on how to work with futures. More information pertaining to the API of the futures language module can be found in the [[:at:tutorial:appendix#futures_and_multifutures|appendix]]. In what follows we provide an overview on how to work with futures. More information pertaining to the API of the futures language module can be found in the [[:at:tutorial:appendix#futures_and_multifutures|appendix]].
 </note> </note>
at/tutorial/actors.1580934280.txt.gz · Last modified: 2020/02/05 21:26 (external edit)