( A Practical Guide to SysML, Friedenthal pg 116)īlock Definition Diagram (bdd): A Block Definition Diagram is a static structural diagram that shows system components, their contents (Properties, Behaviors, Constraints), Interfaces, and relationships. "The block definition diagram is used to define blocks in terms of their features and their structural relationships with other blocks." So it is not iterative.įor UML specifically though the precise meaning is included in qwerty_so's answer so I will not repeat it here.What is a SysML Block Definition diagram? Several Different Definitions from the Experts All the code does is waiting for a buffer to fill. You can clearly say it is a loop and nothing is being changed. On the other hand, you can have a loop like that: loop From this perspective almost every loop is iterative. When applying a loop, almost always you have some sort of a resulting set impacted by it and one can argue that with every loop step that resulting set is being further changed, meaning the next loop step is applied on the result of the previous step. If you think of a code, it's somewhat different though. From the position perspective joining the elements is a repetitive process but it is not iterative, as each join is applied to a different set of elements - it does not apply to those already joined. There is a virtually endless stream of similar part sets, each set consisting of the same type of parts as previously and requiring the same kind of connection. For every next run, identical set of elements the same type and number of screws is applied. On one of the positions a particular screw/set of screws is applied to join two or more elements. Imagine an assembly line in a mass production factory. In real life a process can quite easily be considered repetitive but in itself not really iterative. Of course this is a pure word definition, not in the context of software development. The highlight with a script font is mine. We used an iterative process of refinement and modification.(of a process) that involves repeating a process or set of instructions again and again, each time applying it to the result of the previous stage Let's have a look at the dictionary definition of iterative first: Yet my believe both my level of English and IT experience are sufficient to answer this question. So rather than a for loop the keyword «iterative» for the region tells that it's behavior may not be handeled in parallel.įirst a disclaimer - I am not a native English speaker. This can be processed in either of the above ways. The for-loop itself comes from the input collection you pass to the region. stream is a bit more complicated and you might read on that page in the UML spec. You can guess that behavior defined in a parallel region can be executed in parallel. Other values for this keyword are parallel and stream. Otherwise, the order of the expansion executions is not defined. If the input collections are ordered, then the expansion executions are sequenced in the order induced by the input collection. The first expansion execution begins immediately when the ExpansionRegion starts executing, with subsequent executions starting when the previous execution is completed.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |