[feature request] slice accepting a target as index argument

[stemangiola]

Hello,

I am trying to do

pattern = slice(x, index = another_target_integer_vector)

but it seems this is not accepted.

It would be great if it was, to make branching much more flexible.

[wlandau]

Unfortunately this is not feasible in targets because it is not compatible with the design goals of dynamic branching.