Constructs an iterator over a collection.

Advances an iterator.

Advances the back of a double-ended iterator.

Returns #t if an iterator has no more items to produce.

Returns #t if an iterator can be advanced from the back.

Iterates over a numeric range.

Iterates over an inclusive numeric range.

Iterates over zero or more arguments.

Returns an iterator which lazily calls a function.

Returns an iterator which infinitely yields its arguments.

Returns an iterator which repeatedly calls a function.

Iterates over non-overlapping sub-arrays.

Iterates over non-overlapping sub-arrays with an exact size.

Iterates over non-overlapping sub-arrays, in reverse order.

Iterates over non-overlapping sub-arrays with an exact size, in reverse order.

Iterates over overlapping sub-arrays.

Iterates over lines in a string.

Iterates over sub-strings.

Iterates over the keys of a table.

Iterates over the values of a table.

Reverses an iterator.

Counts an iterator's items as they're yielded.

Clones another iterator's items.

Recursively clones another iterator's items.

Skips over another iterator's items by the given interval.

Calls a function for each of another iterator's items.

Discards items from another iterator which fail to match a predicate.

Combines multiple iterators.

Sequences multiple iterators, one after another.

Flattens nested structure.

Repeats another iterator indefinitely.

Limits another iterator to a fixed number of items.

Limits another iterator using a predicate.

Skips a fixed number of leading items from another iterator.

Skips leading items which match a predicate.

Consumes an iterator, counting its items.

Returns an iterator's nth item.

Returns a double-ended iterator's nth-from-last item.

Lazily tests whether any of an iterator's items match a predicate.

Lazily tests whether all of an iterator's items match a predicate.

Returns the first of an iterator's items which match a predicate.

Returns the first of an iterator's items which match a predicate, searching backwards.

Passes all of an iterator's items to an accumulator function.

Passes all of an iterator's items to an accumulator function in reverse order.