Re: Schwartzian Transform

[Dan Brian]

> this would have to be a proper module and not a builtin op. there is no
> reason to make this built in.

This was essentially my point with regards to naming this op
"map_sort_map". Just explaining the function of the op negates its
usefulness *as* an op, because of the complexity of extracting the keys in
order, and the subsequent comparisons. Imagine the perldoc entry.