This package provides list-processing utilities inspired by the SRFI-1 list library for Scheme (<https://srfi.schemers.org/srfi-1/srfi-1.html>), including car/cdr family accessors, zip, pairwise, for.each, pair.fold.right and friends. Higher-order helpers that are orthogonal to list processing are deferred to the functional package; this package is freely a mixture of implementation and API.