7:58:00jackdanielExamples of immutable objects include all of the members of the region classes, colors and opacities, text styles, and line styles. Since immutable objects by definition never change, functions in the CLIM API can safely capture immutable objects without first copying them. This also allows CLIM to cache immutable objects. Constructor functions that return immutable objects are free to either create and
7:58:06jackdanielreturn a new object, or return an already existing object.
16:49:30beachOr you can use the SBCL extension for sequences.
18:18:39slyrus1ISTR connecting flexi-chain and extensible sequences many years ago. Should I dust off that code or is there some (other) library that does that?