This page (revision-59) was last changed on 13-Jun-2014 18:25 by Albrecht Striffler

This page was created on 26-Oct-2012 10:15 by Joachim Baumeister

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Version Date Modified Size Author Changes ... Change note
59 13-Jun-2014 18:25 7 KB Albrecht Striffler to previous
58 13-Jun-2014 18:25 7 KB Albrecht Striffler to previous | to last
57 13-Jun-2014 18:24 7 KB Albrecht Striffler to previous | to last
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55 13-Jun-2014 18:22 6 KB Albrecht Striffler to previous | to last
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At line 77 changed 2 lines
!!UNKNOWN Action
!!UNKNOWN Actions
At line 89 changed one line
}}}
}}}This way, if the ''temperature'' is ''Unknown'', we also set the variable/question ''icy roads'' to ''Unknown'', without having the write rules for each of the actions.
At line 91 changed one line
This way, if the temperature is ''Unknown'', we also set the variable/question ''icy roads'' to ''Unknown'', without having the write rules for each of the actions.
Be aware that, if you just use THEN and ELSE __without__ an action for UNKNOWN, the action of ELSE will also fire if ''temperature'' is ''Unknown''.
At line 92 added 29 lines
!!ELSE and UNKNOWN in combination with EXCEPT
It is also possible to use an EXCEPT condition together with ELSE and UNKNOWN. If the EXCEPT condition is true, the ELSE action will fire. The UNKNOWN action only fires if the original IF condition is ''Unknown''. For clarification, check out the following truth tables:
\\
__Rule with THEN and ELSE action only__:
|| IF Condition || EXCEPT Condition || THEN Action || ELSE Action
| %%(color:green)true%% | %%(color:green)true%% |   | %%(color:green)fire%%
| %%(color:red)false%% | %%(color:green)true%% |   | %%(color:green)fire%%
| %%(color:grey)unknown%% | %%(color:green)true%% |   | %%(color:green)fire%%
| %%(color:green)true%% | %%(color:red)false%% | %%(color:green)fire%% |  
| %%(color:red)false%% | %%(color:red)false%% |   | %%(color:green)fire%%
| %%(color:grey)unknown%% | %%(color:red)false%% |   | %%(color:green)fire%%
| %%(color:green)true%% | %%(color:grey)unknown%% | %%(color:green)fire%% |  
| %%(color:red)false%% | %%(color:grey)unknown%% |   | %%(color:green)fire%%
| %%(color:grey)unknown%% | %%(color:grey)unknown%% |   | %%(color:green)fire%%
__Rule with THEN and ELSE and UNKNOWN action__:
|| IF Condition || EXCEPT Condition || THEN Action || ELSE Action || UNKNOWN Action
| %%(color:green)true%% | %%(color:green)true%% |   | %%(color:green)fire%% |  
| %%(color:red)false%% | %%(color:green)true%% |   | %%(color:green)fire%% |  
| %%(color:grey)unknown%% | %%(color:green)true%% |   | %%(color:green)fire%% |  
| %%(color:green)true%% | %%(color:red)false%% | %%(color:green)fire%% |   |  
| %%(color:red)false%% | %%(color:red)false%% |   | %%(color:green)fire%% |  
| %%(color:grey)unknown%% | %%(color:red)false%% |   |   | %%(color:green)fire%%
| %%(color:green)true%% | %%(color:grey)unknown%% | %%(color:green)fire%% |   |  
| %%(color:red)false%% | %%(color:grey)unknown%% |   | %%(color:green)fire%% |  
| %%(color:grey)unknown%% | %%(color:grey)unknown%% |   |   | %%(color:green)fire%%
At line 177 added 8 lines
This page (revision-59) was last changed on 13-Jun-2014 18:25 by Albrecht Striffler Top