[r6rs-discuss] "Unspecified"

[John Cowan]

Anton van Straaten scripsit:

> A value named "unspecified" (or #<unspecified>, #!unspecified etc.) is 
> used by Chicken, Larceny, and SCM, at least.  Others (in addition to 
> Scheme 48) use some variant such as "unspecific".  Others, of course, 
> use a variation on "void", apparently borrowed from C.

The current implementation of Chicken does not have any such read-syntax.
If forced to (as by display), the unspecified value will print as
#<unspecified>, but it can't be reread.  However, the core procedure
"void" returns the unspecified value when invoked.

-- 
That you can cover for the plentiful            John Cowan
and often gaping errors, misconstruals,         http://www.ccil.org/~cowan
and disinformation in your posts                cowan at ccil.org
through sheer volume -- that is another
misconception.  --Mike to Peter