[ThatGeoGuy]

> but I have thought about generalising things like numerical ranges by having something like unfold-transduce.

This is more or less what I was wondering about. Numerics, ports, SRFI-41 streams, etc. There's a lot of stuff that isn't in e.g. r7rs-small but is more or less expected in most Scheme implementations.

[bjoli]

Well. Without generic functions it is impossible to specify a "complete" API. I mention it in "Scope considerations" in the srfi document