Make a way to pass a range (as in 2..10) to a function as a parameter

[rlwhitcomb]

Say I want to apply a function to a range of values:

define l(n, p) = { loop v over n { p(v, n) } }
l(2..10, op)

Right now this is a syntax error because ranges (loop controls) are not allowed as parameters.

[rlwhitcomb]

Would also need to update "typeof" to return "range" for this. Don't know how to handle "cast" or "~~" or other conversions.

[rlwhitcomb]

Note that we already allow a range in "sumof" and "productof" so the same principles ought to apply.

[rlwhitcomb]

The difficulty in this is that formal parameters are identified as a single variable name, while a range expression has from one to three variables. How would we refer to them inside the function????