Organizing/ structuring rule sets and rules

[Elcid]

@toggledbits
Its a bit confusing, i read this
"[5,7,9], so this function is now obsolete and may be removed later)"
and tried [1..7], when that failed, I assumed the only way to spread was list(1..7)
May be add a note about 1..7 being the same as list(1..7). As I found it some what unclear.

[toggledbits]

@elcid , it says:

I think this is pretty clear. The range operator is documented separately.

May be add a note about 1..7 being the same as list(1..7).

But it's not. That's how we got started.

[Elcid]

@toggledbits said in Expression to randomly run Global Reactions ?:

May be add a note about 1..7 being the same as list(1..7).

But it's not. That's how we got started.

I mean 1..7 being what I assume list(1..7) would produce a single array. That's why I found it confusing, I think that I expected a array to have [ ] around them.
Maybe add "also see range operator".

[LibraSun]

@elcid said in Expression to randomly run Global Reactions ?:

I mean 1..7 being what I assume list(1..7) would produce

Funny you should mention this, since all yesterday, I grappled with the question, "How can I find the minimum of an array in MSR?" (Answer: Not easily at all!) Turns out the min() function only works on a list with 2 elements, not arrays of arbitrary length. In other words, min(1,2,3) yields 1 without a hitch, whereas min([1,2,3]) returns null (for good reason: There's no guarantee the argument will always be a 1-dimensional numeric array!). Same for max().

Which led me to the realization that there's no direct way in MSR to "convert" an array into a list. Seems your brain encountered the same type of mental collision while trying to work out your imported expression.

[toggledbits]

@librasun My notes in the code:

Guess it's time to get to work.

[LibraSun]

@cw-kid Just so you know, I have a "Color Cycler" rule that uses the [Entity Action] [Set Color RGB] action with this expression inside each field ("R", "G" and "B"):

${{ floor(random()*255) }}

which makes the associated light (a Hue bulb) adopt a perfectly random color. Just something you might consider trying.

[cw-kid]

Thanks I will try the "Color Cycler" in a brand new rule to test it out.

I haven't as yet looked at updating my current rule with the new expression to always guarantee a new random number that hasn't been repeated etc.

I will have a look over the weekend. Sure I will have questions.

Cheers

[cw-kid]

@elcid said in Expression to randomly run Global Reactions ?:

remove( 1..7, randomVal - 1)[floor(random()*6)]

I've just tried using this in my rule set, I added it as the expression for the rule. When I press the play button next to it, it seems to work and changes to different numbers between 1 to 7 etc.

However when I restart Reactor it says it cannot find the Global Expression named "randomVal".

So I then created it as a Global Expression, the error has now gone away, but I don't understand what this Global Expression is for?

Thanks

[Elcid]

That should be used in the reaction as image below

The expression global or normal is left blank. so every time your rule reaction runs it sets a new unique random number, ready for next time

[cw-kid]

@elcid

This look better now?

I have added the Set Variable in the Set Reaction and made the expression empty:

[cw-kid]

It looks to be working OK. Its changing the colours on the LED strip every 5 minutes currently. I'll leave it running for a while tonight.

Thanks.