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the usage of e language "now"

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hi all,

 

     i learn the code written by someone else has finished many years ago,and i couldn't contact with him.in the code ,i find the "now" programme,the defination and the example are easily understood,but i don't know which senario could use this keyword,which enviroment should "now" could be used.  ,,the reference said ,in the same cycle ,and tcm is involved,but codes i read is something like this:

   on  a_ev

  {

        if (   (now @b_ev))

           and (now  @c_ev)

          or ... 

         ....

          ) 

          {

               ... //actions  

           };

          if ()

          {

             emit c_ev; 

          }; 

   } ;//on brackets

i think the c_ev is the consequence,and the a_ev is the reason,,,this segment of code make me so confused!

 

 

thank you for your helping me out

Bs 


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