foldFor

Fold over a chunk of rows, calling the supplied fold-like function on each row as it is received. In case the cursor is exhausted, a Left value is returned, otherwise a Right value is returned.

Fold over a chunk of rows from the given cursor, calling the supplied fold-like function on each row as it is received. In case the cursor is exhausted, a Left value is returned, otherwise a Right value is returned.

Fold over a chunk of rows, calling the supplied fold-like function on each row as it is received. In case the cursor is exhausted, a Left value is returned, otherwise a Right value is returned.

Build a (possibly infinite) forest from a list of seed values. unfoldForest f seeds invokes unfoldTree on each seed value. For a monadic version, see unfoldForestM (depth-first) and unfoldForestM_BF (breadth-first).

Monadic forest builder, in depth-first order.

Monadic forest builder, in breadth-first order. See unfoldForest for more info. Implemented using an algorithm adapted from Breadth-First Numbering: Lessons from a Small Exercise in Algorithm Design, by Chris Okasaki, ICFP'00.

Create a forest from a value and an unfolding function.