Zero-arity versions of these fns are useful in situations like the following:
Approach: This patch adds zero-arity versions of every-pred and some-fn with these semantics:
Patch adds zero-arity version
Patch reformats docstring to 80 character width (matching other core fns) - comments are identical other than the addition of a final sentence stating behavior with zero-arity.
Tassilo, can you undo the line break changes on this patch to minimize the patch differences?
@Alex: That I've reformatted the docstring so that it doesn't look like a comb and fits in 80 columns is a feature. Should I really revert to the original, ugly, less readable formatting only to make the patch 8 lines shorter?
My goal was to simplify the patch so it is easier to review. Since the comment is identical (except for the last line), we can instead note that as a feature of the patch.