Re: (< complex) and friends

[Jon Wilson]

Say you want to both filter out most elements from a list and also make 
sure that the remaining elements are sorted.

(apply < (filter some-predicate original-list))

If (<) didn't evaluate to #t, then you'd have to put code in there to 
check the length of the value you get from filter, which makes things 
uglier.  Also, having (<) => #t doesn't  hurt anything.

Bill Schottstaedt wrote:
> There are actually more problems in that area; for example:
>
> guile> (< 2 1 1.0+3.0i)
> #f
>
> which perhaps should be an error also.  My druthers for the
> one arg case is to simply disallow it -- why does Guile support
> stuff like:
>
> guile> (<)
> #t