(chibi iset iterators)

(iset-empty? iset)

Returns true iff iset is empty.

(iset-cursor iset [stack])

Create a new iset cursor pointing to the first element of iset, with an optional stack argument.

(iset-cursor-next iset cur)

Return a new iset cursor pointing to the next element of iset after cur. If cur is already at end-of-iset?, the resulting cursor is as well.

(iset-ref iset cur)

Return the element of iset iset at cursor cur. If the cursor is at end-of-iset?, raises an error.

(end-of-iset? cur)

Returns true iff cur is at the end of iset, such that iset-ref is no longer valid.

(iset= . o)

Returns true iff all arguments contain the same elements. Always returns true if there are less than two arguments.

(iset<= . o)

Returns true iff the arguments are monotonically increasing, that is each argument contains every element of all preceding arguments. Always returns true if there are less than two arguments.

(iset>= . o)

Returns true iff the arguments are monotonically decreasing, that is each argument contains every element of all succeeding arguments. Always returns true if there are less than two arguments.

(iset-fold-node kons knil iset)

(iset-fold kons knil iset)

The fundamental iset iterator. Applies kons to every element of iset along with an accumulator, starting with knil. Returns knil if iset is empty.

(iset-for-each-node proc iset)

(iset-for-each proc iset)

Runs proc on every element of iset, discarding the results.

(iset->list iset)

Returns a list of every integer in iset in sorted (increasing) order.

(iset-size iset)

Returns the number of elements in iset.