values, and returns all of them. But it returns them one at a time.
What's going on here? Well amb is given a list of
Error: no current problem
As I've said it is best introduced by example, and the
the sense of “having more than one value”.
amb is short for “ambivalent”—in
The feature we shall be adding is called amb .
of what this chapter has to offer.
you can read the next few sections on their own if you want to get a taste
from before diving in to the
that you understand the implementation details of CPS
If you have skipped ahead to here, you should at least make sure
Understanding this chapter relies heavily on previous chapters.
but suffice to say that it is one step on the way to implementing
or procedural languages. This feature is best introduced by example,
specification to add a feature not normally found in functional
scheme implementation, this chapter makes a deliberate departure
been extending this interpreter to be more like a complete
Wheras, with the exception of , we have
Chapter 16. Chronological Backtracking
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