My cheerlights flow got itself trapped in a loop so I want to add a counter and get it to give up after 10 attempts So I added a change node at start of flow to set flow.attempts to 10 and then added a switch later on in the loop to detect if attempts < 0 Then I went to add something to decrement…

[image] cymplecy: Or is there an easy method I've missed? Well, not as simple as chosing an increment drop down but, not sooo difficult [chrome_kZKrTYVwqn] [image] Simon, I sometimes think your aversion to function nodes is counter productive :wink: (see what I did there :laughing: )

I am the ultimate block-based programmer evangelist - someone has to fight the good fight :slight_smile: Node-RED should (IMO) always (as it does in LOTS of cases) let us do simple operations without coding And of course, even when I code, I 99% use Bart's Blockly node :slight_smile:

Actually I can envisage a simple node that does things like this... but of course the instant reaction is scope creep... I would want simple add, subtract, multiply, divide etc of the "payload" by a constant, (eg see Steve's buffer parser) or flow/global property... oh and then combinations like mu…

This is something I've been thinking about - having a core set of nodes for common operations on standard JavaScript types. There is already the node-red-contrib-string as a node that provides common string functions - not saying that's quite the model I had in mind, but it is along those lines. A…

I was wondering if the join node could have an add/minus/multiply/divide setting for numbers with a starting number?

I just wanted to subtract 1 from a number ....... :slight_smile:

Surely you can do that in the blockly node :rofl:

If someone does a node-red-contrib-just-subtract-one node, can they also assemble an end to end illustrated tutorial to get from the idea n -=1 to a published node? It's an intimidating stage of the learning curve.

Increment/decrement property using core nodes

General

TotallyInformation 21 January 2022 12:03 7

And maybe a conversions node? I could see that would be REALLY useful.

These nodes would also help take Node-RED into improving some areas that it is weak on compared to some other visual tools as well which would be nice. One day, it would be wonderful to be able to use Node-RED to do ETL tasks that people currently switch to Python for.

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Increment/decrement property using core nodes

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