Resources on expressions

Can anybody point me in the direction of some good resources, or even cheat sheets, specifically on touchdesigner expressions?

I have picked up some along the way, but my coding language knowledge is very limited.

In particular I am trying to write an expression that increases the last digit of the selected geo in a render top with each copied instance. I assume its some combination of op(‘geo1’) and me.digits but I only have a limited knowledge of syntax so I cant make it work.

Thankyou.

You mean with render1 you want to render geo1, if you copy the render1 to render2 it should render geo2?

If so you could use f-strings like this:

op(f"geo{me.digits}")

Be advised that you usually don’t want to have many render TOPs in a project

1 Like

Excellent, thats just what i need, thank you.