Add math.Rand that calls rand.Float64

[godalming123]

Currently random ints have to be created like so:

{{ index (shuffle (seq 0 9)) 0 }}

Where 0 and 9 specify the range for the number to be generate in.

And random floats have to be generated like so:

{{ mul 0.1 (index (shuffle (seq 0 90)) 0) }}

Where 0.1 is the amount of precision desired, 0*the precision is the minimum bound, and 90*the precision is the upper bound.

It would be much easier if their were functions:

{{ randInt 0 9 }}
{{ randFloat 0.1 0 9 }} // Note that this will generate a number between 0 and 9 without having to change the bounds to adjust for the precision desired

[jmooring]

Out of curiosity, how do you currently use the random numbers generated with your examples above?

I suspect we'd be more likely to implement a single math.Rand function using:
https://pkg.go.dev/math/rand#Float64

{{ math.Rand | mul 10 | add 1 | int }} --> random int between 1 and 10 inclusive

[godalming123]

I'm shifting images that are placed on top of each other slightly so that all of them are visible. This requires generating a random float that is between 2 numbers.

[github-actions]

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