GH2 expressions cannot have zero inputs

[rhino19 (Henry Segerman)]

A change I noticed from Grasshopper1: in GH2 it seems that expressions must have at least one input. This is a change from Grasshopper1. In Grasshopper1 I often use expressions with no inputs as a way to write constants (special numbers or vectors for example) that are visible from the main grasshopper window. Is there another way to do something similar in GH2?

I don’t yet see a reference for the notation in expressions, but I assume that is coming. I figured out that vectors are now written with (round brackets) rather than {curly braces} from Grasshopper1. But I couldn’t figure out the syntax for powers. Neither ^ nor ** seemed to work.

[LeoPedersen]

The notation has changed to a C#-based one in GH2.

Now we need to use “pow(x,y)”

Examples in this thread:

GH2 - Evaluate Expression error with “Show Full Names”

Thanks for reporting RH-98115, it will at least get a warning to use ‘pow’ ^ isn’t an exponent operator in GH2, the expression language is C# based now and in C# ^ is bitwise XOR, which is why it errors on doubles and quietly returns the wrong number on integers. Use pow(x, y) or a superscript like x² instead. so something like this.. x/pow(2, y/12.0)