How to replace fibaro:sleep with setTimeout in a loop

[RohitNz 7]

 Many of my scenes have this structure where I am iterating through an array and processing each entry, and I want a delay between each.  I have always used fibaro:sleep.

 

I am struggling to find a good way to use setTimeout here.  Surely if I call Process_Entry with setTimeout, the loop is going to carry on running.

 

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[jgab 2,055]

Another approach is to generalise it to a function that process each item in a table/sequence with a delay, and then an option interval when it should start over.

The sequenceProcessor function returns a reference that can be used to stop the processing.

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Edited May 12, 2023 by jgab

[jgab 2,055]

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something like this. You must make sure that all entries are processed within the 'Delay' time, or the jobs will start to stack up.

So, what we do here is that in the Main_Loop we fire off all the setTimeout at once but spaced in time with n*(Breather_Secs*1000).

 

There are more advanced ways to do this that chain the setTimeout calls, but that would require a more drastic change to your program structure...

Edited May 12, 2023 by jgab

[jgab 2,055]

The more advanced could look like this - no risks that jobs are stacking up.
 

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Edited May 12, 2023 by jgab

[RohitNz 7]

The arrays range from 10s to 100s of cells, so I don't want to have that many timers.

 

I did not know that next existed, thanks.

[jgab 2,055]

Well, starting 100-1000 timers in parallell is not a problem

The problem is if you start them faster then they complete so they start to stack up - as it will of course eat memory.

However, timers don't eat cpu while they wait to execute, so that is at least good news.